153661656 has 32 divisors (see below), whose sum is σ = 384922800. Its totient is φ = 51118080.

The previous prime is 153661639. The next prime is 153661667. The reversal of 153661656 is 656166351.

It is a super-2 number, since 2×153661656² = 47223809049324672, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6360 + ... + 18648.

Almost surely, 2^153661656 is an apocalyptic number.

It is an amenable number.

153661656 is an abundant number, since it is smaller than the sum of its proper divisors (231261144).

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

153661656 is a wasteful number, since it uses less digits than its factorization.

153661656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12819 (or 12815 counting only the distinct ones).

The product of its digits is 97200, while the sum is 39.

The square root of 153661656 is about 12396.0338818511. The cubic root of 153661656 is about 535.6180076987.

The spelling of 153661656 in words is "one hundred fifty-three million, six hundred sixty-one thousand, six hundred fifty-six".