690860345 has 16 divisors (see below), whose sum is σ = 952767360. Its totient is φ = 471081984.

The previous prime is 690860321. The next prime is 690860363. The reversal of 690860345 is 543068096.

690860345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 690860345 - 2⁶ = 690860281 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48872 + ... + 61401.

It is an arithmetic number, because the mean of its divisors is an integer number (59547960).

Almost surely, 2^690860345 is an apocalyptic number.

It is an amenable number.

690860345 is a deficient number, since it is larger than the sum of its proper divisors (261907015).

690860345 is a wasteful number, since it uses less digits than its factorization.

690860345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110464.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 690860345 is about 26284.2223586698. Note that the first 3 decimals coincide. The cubic root of 690860345 is about 884.0227095884.

The spelling of 690860345 in words is "six hundred ninety million, eight hundred sixty thousand, three hundred forty-five".