696609969 has 32 divisors (see below), whose sum is σ = 1075659264. Its totient is φ = 396314880.

The previous prime is 696609943. The next prime is 696609971. The reversal of 696609969 is 969906696.

It is not a de Polignac number, because 696609969 - 2⁸ = 696609713 is a prime.

It is a super-2 number, since 2×696609969² = 970530897820361922, which contains 22 as substring.

696609969 is a strobogrammatic number because it is the same when read upside-down.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (696609929) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 247122 + ... + 249924.

It is an arithmetic number, because the mean of its divisors is an integer number (33614352).

Almost surely, 2^696609969 is an apocalyptic number.

It is an amenable number.

696609969 is a deficient number, since it is larger than the sum of its proper divisors (379049295).

696609969 is a wasteful number, since it uses less digits than its factorization.

696609969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3277.

The product of its (nonzero) digits is 8503056, while the sum is 60.

The square root of 696609969 is about 26393.3697924308. The cubic root of 696609969 is about 886.4683377965.

The spelling of 696609969 in words is "six hundred ninety-six million, six hundred nine thousand, nine hundred sixty-nine".