30697664 has 28 divisors (see below), whose sum is σ = 61212984. Its totient is φ = 15273984.

The previous prime is 30697651. The next prime is 30697669. The reversal of 30697664 is 46679603.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (30697669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13472 + ... + 15584.

It is an arithmetic number, because the mean of its divisors is an integer number (2186178).

Almost surely, 2^30697664 is an apocalyptic number.

It is an amenable number.

30697664 is a deficient number, since it is larger than the sum of its proper divisors (30515320).

30697664 is a wasteful number, since it uses less digits than its factorization.

30697664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2352 (or 2342 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 41.

The square root of 30697664 is about 5540.5472653881. The cubic root of 30697664 is about 313.1134879560.

The spelling of 30697664 in words is "thirty million, six hundred ninety-seven thousand, six hundred sixty-four".