61117916 has 6 divisors (see below), whose sum is σ = 106956360. Its totient is φ = 30558956.

The previous prime is 61117897. The next prime is 61117933. The reversal of 61117916 is 61971116.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7639736 + ... + 7639743.

It is an arithmetic number, because the mean of its divisors is an integer number (17826060).

Almost surely, 2^61117916 is an apocalyptic number.

It is an amenable number.

61117916 is a deficient number, since it is larger than the sum of its proper divisors (45838444).

61117916 is a wasteful number, since it uses less digits than its factorization.

61117916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15279483 (or 15279481 counting only the distinct ones).

The product of its digits is 2268, while the sum is 32.

The square root of 61117916 is about 7817.7948297458. The cubic root of 61117916 is about 393.9032031359.

The spelling of 61117916 in words is "sixty-one million, one hundred seventeen thousand, nine hundred sixteen".