345320680 has 64 divisors (see below), whose sum is σ = 793152000. Its totient is φ = 135277824.

The previous prime is 345320663. The next prime is 345320713. The reversal of 345320680 is 86023543.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 720681 + ... + 721159.

It is an arithmetic number, because the mean of its divisors is an integer number (12393000).

Almost surely, 2^345320680 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 345320680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (396576000).

345320680 is an abundant number, since it is smaller than the sum of its proper divisors (447831320).

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

345320680 is a wasteful number, since it uses less digits than its factorization.

345320680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826 (or 822 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 345320680 is about 18582.8060313829. The cubic root of 345320680 is about 701.5751468083.

The spelling of 345320680 in words is "three hundred forty-five million, three hundred twenty thousand, six hundred eighty".