66652372 has 24 divisors (see below), whose sum is σ = 118512576. Its totient is φ = 32796288.

The previous prime is 66652351. The next prime is 66652447. The reversal of 66652372 is 27325666.

66652372 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 75043 + ... + 75925.

It is an arithmetic number, because the mean of its divisors is an integer number (4938024).

Almost surely, 2^66652372 is an apocalyptic number.

It is an amenable number.

66652372 is a deficient number, since it is larger than the sum of its proper divisors (51860204).

66652372 is a wasteful number, since it uses less digits than its factorization.

66652372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1167 (or 1165 counting only the distinct ones).

The product of its digits is 90720, while the sum is 37.

The square root of 66652372 is about 8164.0903963638. The cubic root of 66652372 is about 405.4511499499.

The spelling of 66652372 in words is "sixty-six million, six hundred fifty-two thousand, three hundred seventy-two".