65724372 has 60 divisors (see below), whose sum is σ = 196368480. Its totient is φ = 18777744.

The previous prime is 65724367. The next prime is 65724383. The reversal of 65724372 is 27342756.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12222 + ... + 16757.

It is an arithmetic number, because the mean of its divisors is an integer number (3272808).

Almost surely, 2^65724372 is an apocalyptic number.

It is an amenable number.

65724372 is an abundant number, since it is smaller than the sum of its proper divisors (130644108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65724372 is a wasteful number, since it uses less digits than its factorization.

65724372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29002 (or 28991 counting only the distinct ones).

The product of its digits is 70560, while the sum is 36.

The square root of 65724372 is about 8107.0569259134. The cubic root of 65724372 is about 403.5606520123.

The spelling of 65724372 in words is "sixty-five million, seven hundred twenty-four thousand, three hundred seventy-two".