32664557 has 2 divisors, whose sum is σ = 32664558. Its totient is φ = 32664556.

The previous prime is 32664529. The next prime is 32664559. The reversal of 32664557 is 75546623.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32103556 + 561001 = 5666^2 + 749^2 .

It is a cyclic number.

It is not a de Polignac number, because 32664557 - 2¹² = 32660461 is a prime.

Together with 32664559, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 32664557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32664559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16332278 + 16332279.

It is an arithmetic number, because the mean of its divisors is an integer number (16332279).

Almost surely, 2^32664557 is an apocalyptic number.

It is an amenable number.

32664557 is a deficient number, since it is larger than the sum of its proper divisors (1).

32664557 is an equidigital number, since it uses as much as digits as its factorization.

32664557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 38.

The square root of 32664557 is about 5715.2915061263. The cubic root of 32664557 is about 319.6629165301.

The spelling of 32664557 in words is "thirty-two million, six hundred sixty-four thousand, five hundred fifty-seven".