697643265 has 16 divisors (see below), whose sum is σ = 1217704896. Its totient is φ = 338251200.

The previous prime is 697643257. The next prime is 697643269. The reversal of 697643265 is 562346796.

It is not a de Polignac number, because 697643265 - 2³ = 697643257 is a prime.

It is a super-2 number, since 2×697643265² = 973412250399720450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (697643269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2113906 + ... + 2114235.

It is an arithmetic number, because the mean of its divisors is an integer number (76106556).

Almost surely, 2^697643265 is an apocalyptic number.

It is an amenable number.

697643265 is a deficient number, since it is larger than the sum of its proper divisors (520061631).

697643265 is a wasteful number, since it uses less digits than its factorization.

697643265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4228160.

The product of its digits is 1632960, while the sum is 48.

The square root of 697643265 is about 26412.9374549670. The cubic root of 697643265 is about 886.9064268764.

The spelling of 697643265 in words is "six hundred ninety-seven million, six hundred forty-three thousand, two hundred sixty-five".