61915898 has 16 divisors (see below), whose sum is σ = 103036320. Its totient is φ = 27666000.

The previous prime is 61915877. The next prime is 61915901. The reversal of 61915898 is 89851916.

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, 22553 + ... + 25148.

It is an arithmetic number, because the mean of its divisors is an integer number (6439770).

Almost surely, 2^61915898 is an apocalyptic number.

61915898 is a deficient number, since it is larger than the sum of its proper divisors (41120422).

61915898 is a wasteful number, since it uses less digits than its factorization.

61915898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47773.

The product of its digits is 155520, while the sum is 47.

The square root of 61915898 is about 7868.6655793724. The cubic root of 61915898 is about 395.6101194503.

The spelling of 61915898 in words is "sixty-one million, nine hundred fifteen thousand, eight hundred ninety-eight".