345881680 has 40 divisors (see below), whose sum is σ = 822884832. Its totient is φ = 135133824.

The previous prime is 345881633. The next prime is 345881689. The reversal of 345881680 is 86188543.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345881689) 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, 46834 + ... + 53713.

Almost surely, 2^345881680 is an apocalyptic number.

It is an amenable number.

345881680 is an abundant number, since it is smaller than the sum of its proper divisors (477003152).

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

345881680 is a wasteful number, since it uses less digits than its factorization.

345881680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100603 (or 100597 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 43.

The square root of 345881680 is about 18597.8945044863. The cubic root of 345881680 is about 701.9548621827.

The spelling of 345881680 in words is "three hundred forty-five million, eight hundred eighty-one thousand, six hundred eighty".