690928263 has 12 divisors (see below), whose sum is σ = 1056714048. Its totient is φ = 433523520.

The previous prime is 690928243. The next prime is 690928289. The reversal of 690928263 is 362829096.

It is not a de Polignac number, because 690928263 - 2²² = 686733959 is a prime.

It is a super-2 number, since 2×690928263² = 954763729224394338, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690928243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2257783 + ... + 2258088.

It is an arithmetic number, because the mean of its divisors is an integer number (88059504).

Almost surely, 2^690928263 is an apocalyptic number.

690928263 is a deficient number, since it is larger than the sum of its proper divisors (365785785).

690928263 is a wasteful number, since it uses less digits than its factorization.

690928263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4515894 (or 4515891 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 690928263 is about 26285.5143187270. The cubic root of 690928263 is about 884.0516778584.

The spelling of 690928263 in words is "six hundred ninety million, nine hundred twenty-eight thousand, two hundred sixty-three".