65720672 has 12 divisors (see below), whose sum is σ = 129387636. Its totient is φ = 32860320.

The previous prime is 65720609. The next prime is 65720693. The reversal of 65720672 is 27602756.

It is a happy number.

65720672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

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 as a sum of consecutive naturals, namely, 1026854 + ... + 1026917.

It is an arithmetic number, because the mean of its divisors is an integer number (10782303).

Almost surely, 2^65720672 is an apocalyptic number.

It is an amenable number.

65720672 is a deficient number, since it is larger than the sum of its proper divisors (63666964).

65720672 is a wasteful number, since it uses less digits than its factorization.

65720672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053781 (or 2053773 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 65720672 is about 8106.8287264503. The cubic root of 65720672 is about 403.5530789594.

The spelling of 65720672 in words is "sixty-five million, seven hundred twenty thousand, six hundred seventy-two".