155560680 has 192 divisors, whose sum is σ = 557219520. Its totient is φ = 37324800.

The previous prime is 155560679. The next prime is 155560681. The reversal of 155560680 is 86065551.

155560680 is a `hidden beast` number, since 15 + 5 + 560 + 6 + 80 = 666.

It is an interprime number because it is at equal distance from previous prime (155560679) and next prime (155560681).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (155560681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 645360 + ... + 645600.

It is an arithmetic number, because the mean of its divisors is an integer number (2902185).

Almost surely, 2^155560680 is an apocalyptic number.

155560680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155560680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278609760).

155560680 is an abundant number, since it is smaller than the sum of its proper divisors (401658840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155560680 is a wasteful number, since it uses less digits than its factorization.

155560680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The square root of 155560680 is about 12472.3967223625. The cubic root of 155560680 is about 537.8154542710.

The spelling of 155560680 in words is "one hundred fifty-five million, five hundred sixty thousand, six hundred eighty".