61595988 has 12 divisors (see below), whose sum is σ = 143724000. Its totient is φ = 20531992.

The previous prime is 61595987. The next prime is 61595993. The reversal of 61595988 is 88959516.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×61595988² = 7588131475392288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61595988.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61595987) 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, 2566488 + ... + 2566511.

It is an arithmetic number, because the mean of its divisors is an integer number (11977000).

Almost surely, 2^61595988 is an apocalyptic number.

It is an amenable number.

61595988 is an abundant number, since it is smaller than the sum of its proper divisors (82128012).

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

61595988 is a wasteful number, since it uses less digits than its factorization.

61595988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5133006 (or 5133004 counting only the distinct ones).

The product of its digits is 777600, while the sum is 51.

The square root of 61595988 is about 7848.3111559112. The cubic root of 61595988 is about 394.9275902093.

The spelling of 61595988 in words is "sixty-one million, five hundred ninety-five thousand, nine hundred eighty-eight".