345511680 has 72 divisors (see below), whose sum is σ = 1103490192. Its totient is φ = 92135424.

The previous prime is 345511679. The next prime is 345511687. The reversal of 345511680 is 86115543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345511687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41149 + ... + 48828.

Almost surely, 2^345511680 is an apocalyptic number.

345511680 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

345511680 is an abundant number, since it is smaller than the sum of its proper divisors (757978512).

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

345511680 is an equidigital number, since it uses as much as digits as its factorization.

345511680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90001 (or 89987 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 345511680 is about 18587.9444802270. The cubic root of 345511680 is about 701.7044721598.

The spelling of 345511680 in words is "three hundred forty-five million, five hundred eleven thousand, six hundred eighty".