32665990 has 32 divisors (see below), whose sum is σ = 67415040. Its totient is φ = 11163744.

The previous prime is 32665961. The next prime is 32665991. The reversal of 32665990 is 9956623.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32665991) 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 15 ways as a sum of consecutive naturals, for example, 30199 + ... + 31261.

It is an arithmetic number, because the mean of its divisors is an integer number (2106720).

Almost surely, 2^32665990 is an apocalyptic number.

32665990 is an abundant number, since it is smaller than the sum of its proper divisors (34749050).

32665990 is a wasteful number, since it uses less digits than its factorization.

32665990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1516.

The product of its (nonzero) digits is 87480, while the sum is 40.

The square root of 32665990 is about 5715.4168701854. The cubic root of 32665990 is about 319.6675910183.

The spelling of 32665990 in words is "thirty-two million, six hundred sixty-five thousand, nine hundred ninety".