72661652 has 12 divisors (see below), whose sum is σ = 145323360. Its totient is φ = 31140696.

The previous prime is 72661637. The next prime is 72661657. The reversal of 72661652 is 25616627.

72661652 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72661657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1297502 + ... + 1297557.

It is an arithmetic number, because the mean of its divisors is an integer number (12110280).

Almost surely, 2^72661652 is an apocalyptic number.

It is an amenable number.

72661652 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

72661652 is a wasteful number, since it uses less digits than its factorization.

72661652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2595070 (or 2595068 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 72661652 is about 8524.1804298126. The cubic root of 72661652 is about 417.2872249368.

The spelling of 72661652 in words is "seventy-two million, six hundred sixty-one thousand, six hundred fifty-two".