695664 has 30 divisors (see below), whose sum is σ = 1947296. Its totient is φ = 231840.

The previous prime is 695663. The next prime is 695677. The reversal of 695664 is 466596.

It is a happy number.

695664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 695664.

It is not an unprimeable number, because it can be changed into a prime (695663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2272 + ... + 2559.

2⁶⁹⁵⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

695664 is an abundant number, since it is smaller than the sum of its proper divisors (1251632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

695664 is a wasteful number, since it uses less digits than its factorization.

695664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4845 (or 4836 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 695664 is about 834.0647456882. The cubic root of 695664 is about 88.6066892955.

The spelling of 695664 in words is "six hundred ninety-five thousand, six hundred sixty-four".