61536620 has 24 divisors (see below), whose sum is σ = 129956400. Its totient is φ = 24475712.

The previous prime is 61536599. The next prime is 61536659. The reversal of 61536620 is 2663516.

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, 5015 + ... + 12174.

It is an arithmetic number, because the mean of its divisors is an integer number (5414850).

Almost surely, 2^61536620 is an apocalyptic number.

It is an amenable number.

61536620 is an abundant number, since it is smaller than the sum of its proper divisors (68419780).

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

61536620 is a wasteful number, since it uses less digits than its factorization.

61536620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17377 (or 17375 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 61536620 is about 7844.5280291424. The cubic root of 61536620 is about 394.8006685345.

The spelling of 61536620 in words is "sixty-one million, five hundred thirty-six thousand, six hundred twenty".