345557656 has 8 divisors (see below), whose sum is σ = 647920620. Its totient is φ = 172778824.

The previous prime is 345557627. The next prime is 345557699. The reversal of 345557656 is 656755543.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21597346 + ... + 21597361.

Almost surely, 2^345557656 is an apocalyptic number.

It is an amenable number.

345557656 is a deficient number, since it is larger than the sum of its proper divisors (302362964).

345557656 is a wasteful number, since it uses less digits than its factorization.

345557656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43194713 (or 43194709 counting only the distinct ones).

The product of its digits is 1890000, while the sum is 46.

The square root of 345557656 is about 18589.1811546394. The cubic root of 345557656 is about 701.7355952118.

The spelling of 345557656 in words is "three hundred forty-five million, five hundred fifty-seven thousand, six hundred fifty-six".