32645921 has 12 divisors (see below), whose sum is σ = 41010816. Its totient is φ = 25437720.

The previous prime is 32645897. The next prime is 32645969. The reversal of 32645921 is 12954623.

It is a happy number.

It is not a de Polignac number, because 32645921 - 2¹⁸ = 32383777 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (32645521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18425 + ... + 20118.

It is an arithmetic number, because the mean of its divisors is an integer number (3417568).

Almost surely, 2^32645921 is an apocalyptic number.

It is an amenable number.

32645921 is a deficient number, since it is larger than the sum of its proper divisors (8364895).

32645921 is a wasteful number, since it uses less digits than its factorization.

32645921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38572 (or 38561 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

The square root of 32645921 is about 5713.6609104846. The cubic root of 32645921 is about 319.6021128952.

The spelling of 32645921 in words is "thirty-two million, six hundred forty-five thousand, nine hundred twenty-one".