61191984 has 60 divisors (see below), whose sum is σ = 183895224. Its totient is φ = 17482752.

The previous prime is 61191953. The next prime is 61191997. The reversal of 61191984 is 48919116.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10657 + ... + 15360.

Almost surely, 2^61191984 is an apocalyptic number.

It is an amenable number.

61191984 is an abundant number, since it is smaller than the sum of its proper divisors (122703240).

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

61191984 is a wasteful number, since it uses less digits than its factorization.

61191984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26042 (or 26029 counting only the distinct ones).

The product of its digits is 15552, while the sum is 39.

The square root of 61191984 is about 7822.5305368531. The cubic root of 61191984 is about 394.0622609400.

The spelling of 61191984 in words is "sixty-one million, one hundred ninety-one thousand, nine hundred eighty-four".