155660660 has 24 divisors (see below), whose sum is σ = 327468960. Its totient is φ = 62153504.

The previous prime is 155660627. The next prime is 155660669. The reversal of 155660660 is 66066551.

It is a self number, because there is not a number n which added to its sum of digits gives 155660660.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155660669) 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 7 ways as a sum of consecutive naturals, for example, 5111 + ... + 18369.

It is an arithmetic number, because the mean of its divisors is an integer number (13644540).

Almost surely, 2^155660660 is an apocalyptic number.

155660660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155660660 is an abundant number, since it is smaller than the sum of its proper divisors (171808300).

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

155660660 is a wasteful number, since it uses less digits than its factorization.

155660660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13855 (or 13853 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 155660660 is about 12476.4041293956. The cubic root of 155660660 is about 537.9306489196.

The spelling of 155660660 in words is "one hundred fifty-five million, six hundred sixty thousand, six hundred sixty".