155842668 has 72 divisors (see below), whose sum is σ = 409980480. Its totient is φ = 49870080.

The previous prime is 155842667. The next prime is 155842699. The reversal of 155842668 is 866248551.

155842668 is a `hidden beast` number, since 1 + 5 + 584 + 2 + 6 + 68 = 666.

155842668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (155842667) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 104488 + ... + 105968.

Almost surely, 2^155842668 is an apocalyptic number.

155842668 is a gapful number since it is divisible by the number (18) 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 155842668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204990240).

155842668 is an abundant number, since it is smaller than the sum of its proper divisors (254137812).

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

155842668 is a wasteful number, since it uses less digits than its factorization.

155842668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1607 (or 1602 counting only the distinct ones).

The product of its digits is 460800, while the sum is 45.

The square root of 155842668 is about 12483.6960872972. The cubic root of 155842668 is about 538.1402277698.

The spelling of 155842668 in words is "one hundred fifty-five million, eight hundred forty-two thousand, six hundred sixty-eight".