66372650 has 24 divisors (see below), whose sum is σ = 126328224. Its totient is φ = 25930800.

The previous prime is 66372617. The next prime is 66372653. The reversal of 66372650 is 5627366.

66372650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 66372650.

It is not an unprimeable number, because it can be changed into a prime (66372653) 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, 13286 + ... + 17585.

It is an arithmetic number, because the mean of its divisors is an integer number (5263676).

Almost surely, 2^66372650 is an apocalyptic number.

66372650 is a deficient number, since it is larger than the sum of its proper divisors (59955574).

66372650 is a wasteful number, since it uses less digits than its factorization.

66372650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30926 (or 30921 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 66372650 is about 8146.9411437668. The cubic root of 66372650 is about 404.8831649979.

The spelling of 66372650 in words is "sixty-six million, three hundred seventy-two thousand, six hundred fifty".