61712620 has 12 divisors (see below), whose sum is σ = 129596544. Its totient is φ = 24685040.

The previous prime is 61712603. The next prime is 61712653. The reversal of 61712620 is 2621716.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1542796 + ... + 1542835.

It is an arithmetic number, because the mean of its divisors is an integer number (10799712).

Almost surely, 2^61712620 is an apocalyptic number.

It is an amenable number.

61712620 is an abundant number, since it is smaller than the sum of its proper divisors (67883924).

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

61712620 is a wasteful number, since it uses less digits than its factorization.

61712620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3085640 (or 3085638 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 61712620 is about 7855.7380302553. The cubic root of 61712620 is about 395.1766981704.

The spelling of 61712620 in words is "sixty-one million, seven hundred twelve thousand, six hundred twenty".