32664331 has 24 divisors (see below), whose sum is σ = 39644640. Its totient is φ = 26812800.

The previous prime is 32664329. The next prime is 32664343. The reversal of 32664331 is 13346623.

It is not a de Polignac number, because 32664331 - 2¹ = 32664329 is a prime.

It is a super-2 number, since 2×32664331² = 2133917039355122, which contains 22 as substring.

It is a nialpdrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 32664331.

It is not an unprimeable number, because it can be changed into a prime (32664311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 142525 + ... + 142753.

It is an arithmetic number, because the mean of its divisors is an integer number (1651860).

Almost surely, 2^32664331 is an apocalyptic number.

32664331 is a deficient number, since it is larger than the sum of its proper divisors (6980309).

32664331 is a wasteful number, since it uses less digits than its factorization.

32664331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355 (or 348 counting only the distinct ones).

The product of its digits is 7776, while the sum is 28.

The square root of 32664331 is about 5715.2717345722. The cubic root of 32664331 is about 319.6621792990.

The spelling of 32664331 in words is "thirty-two million, six hundred sixty-four thousand, three hundred thirty-one".