345616856 has 16 divisors (see below), whose sum is σ = 697880400. Its totient is φ = 159515424.

The previous prime is 345616847. The next prime is 345616871. The reversal of 345616856 is 658616543.

It is a super-2 number, since 2×345616856² = 238902022302649472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1661516 + ... + 1661723.

It is an arithmetic number, because the mean of its divisors is an integer number (43617525).

Almost surely, 2^345616856 is an apocalyptic number.

It is an amenable number.

345616856 is an abundant number, since it is smaller than the sum of its proper divisors (352263544).

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

345616856 is a wasteful number, since it uses less digits than its factorization.

345616856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3323258 (or 3323254 counting only the distinct ones).

The product of its digits is 518400, while the sum is 44.

The square root of 345616856 is about 18590.7734104851. The cubic root of 345616856 is about 701.7756660696.

The spelling of 345616856 in words is "three hundred forty-five million, six hundred sixteen thousand, eight hundred fifty-six".