690864369 has 16 divisors (see below), whose sum is σ = 1003161600. Its totient is φ = 420368256.

The previous prime is 690864347. The next prime is 690864373. The reversal of 690864369 is 963468096.

It is not a de Polignac number, because 690864369 - 2⁸ = 690864113 is a prime.

It is a super-2 number, since 2×690864369² = 954587152707536322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (690864329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96049 + ... + 102990.

It is an arithmetic number, because the mean of its divisors is an integer number (62697600).

Almost surely, 2^690864369 is an apocalyptic number.

It is an amenable number.

690864369 is a deficient number, since it is larger than the sum of its proper divisors (312297231).

690864369 is a wasteful number, since it uses less digits than its factorization.

690864369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199144.

The product of its (nonzero) digits is 1679616, while the sum is 51.

The square root of 690864369 is about 26284.2989063814. The cubic root of 690864369 is about 884.0244259509.

The spelling of 690864369 in words is "six hundred ninety million, eight hundred sixty-four thousand, three hundred sixty-nine".