32639661 has 12 divisors (see below), whose sum is σ = 48420892. Its totient is φ = 21171456.

The previous prime is 32639657. The next prime is 32639669. The reversal of 32639661 is 16693623.

It can be written as a sum of positive squares in 2 ways, for example, as 30140100 + 2499561 = 5490^2 + 1581^2 .

It is not a de Polignac number, because 32639661 - 2² = 32639657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32639669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48676 + ... + 49341.

Almost surely, 2^32639661 is an apocalyptic number.

It is an amenable number.

32639661 is a deficient number, since it is larger than the sum of its proper divisors (15781231).

32639661 is a wasteful number, since it uses less digits than its factorization.

32639661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98060 (or 98057 counting only the distinct ones).

The product of its digits is 34992, while the sum is 36.

The square root of 32639661 is about 5713.1130743230. The cubic root of 32639661 is about 319.5816832156.

The spelling of 32639661 in words is "thirty-two million, six hundred thirty-nine thousand, six hundred sixty-one".