61166879 has 4 divisors (see below), whose sum is σ = 61308576. Its totient is φ = 61025184.

The previous prime is 61166873. The next prime is 61166899. The reversal of 61166879 is 97866116.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61166879 - 2²⁴ = 44389663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61166873) 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, 70199 + ... + 71064.

It is an arithmetic number, because the mean of its divisors is an integer number (15327144).

Almost surely, 2^61166879 is an apocalyptic number.

61166879 is a deficient number, since it is larger than the sum of its proper divisors (141697).

61166879 is a wasteful number, since it uses less digits than its factorization.

61166879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141696.

The product of its digits is 108864, while the sum is 44.

The square root of 61166879 is about 7820.9257124716. The cubic root of 61166879 is about 394.0083634323.

The spelling of 61166879 in words is "sixty-one million, one hundred sixty-six thousand, eight hundred seventy-nine".