353660656 has 40 divisors (see below), whose sum is σ = 735783264. Its totient is φ = 164075520.

The previous prime is 353660621. The next prime is 353660663. The reversal of 353660656 is 656066353.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10156 + ... + 28468.

Almost surely, 2^353660656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 353660656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (367891632).

353660656 is an abundant number, since it is smaller than the sum of its proper divisors (382122608).

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

353660656 is a wasteful number, since it uses less digits than its factorization.

353660656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18409 (or 18403 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 40.

The square root of 353660656 is about 18805.8675949822. The cubic root of 353660656 is about 707.1782842270.

The spelling of 353660656 in words is "three hundred fifty-three million, six hundred sixty thousand, six hundred fifty-six".