690925407 has 16 divisors (see below), whose sum is σ = 977495040. Its totient is φ = 432601472.

The previous prime is 690925379. The next prime is 690925447. The reversal of 690925407 is 704529096.

It is a cyclic number.

It is not a de Polignac number, because 690925407 - 2¹⁵ = 690892639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690925447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10288 + ... + 38570.

It is an arithmetic number, because the mean of its divisors is an integer number (61093440).

Almost surely, 2^690925407 is an apocalyptic number.

690925407 is a deficient number, since it is larger than the sum of its proper divisors (286569633).

690925407 is a wasteful number, since it uses less digits than its factorization.

690925407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28782.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 690925407 is about 26285.4599921706. The cubic root of 690925407 is about 884.0504597603.

The spelling of 690925407 in words is "six hundred ninety million, nine hundred twenty-five thousand, four hundred seven".