345680356 has 12 divisors (see below), whose sum is σ = 691360768. Its totient is φ = 148148712.

The previous prime is 345680353. The next prime is 345680399. The reversal of 345680356 is 653086543.

345680356 is an admirable number.

It is a hoax number, since the sum of its digits (40) 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 (345680353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6172836 + ... + 6172891.

Almost surely, 2^345680356 is an apocalyptic number.

It is an amenable number.

345680356 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

345680356 is a wasteful number, since it uses less digits than its factorization.

345680356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12345738 (or 12345736 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 40.

The square root of 345680356 is about 18592.4811684724. The cubic root of 345680356 is about 701.8186423936.

The spelling of 345680356 in words is "three hundred forty-five million, six hundred eighty thousand, three hundred fifty-six".