61372660 has 24 divisors (see below), whose sum is σ = 135666720. Its totient is φ = 23256864.

The previous prime is 61372657. The next prime is 61372699. The reversal of 61372660 is 6627316.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80374 + ... + 81133.

It is an arithmetic number, because the mean of its divisors is an integer number (5652780).

Almost surely, 2^61372660 is an apocalyptic number.

It is an amenable number.

61372660 is an abundant number, since it is smaller than the sum of its proper divisors (74294060).

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

61372660 is a wasteful number, since it uses less digits than its factorization.

61372660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161535 (or 161533 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 61372660 is about 7834.0704617715. The cubic root of 61372660 is about 394.4497171079.

Adding to 61372660 its reverse (6627316), we get a palindrome (67999976).

The spelling of 61372660 in words is "sixty-one million, three hundred seventy-two thousand, six hundred sixty".