61113979 has 8 divisors (see below), whose sum is σ = 61996032. Its totient is φ = 60235560.

The previous prime is 61113971. The next prime is 61114003. The reversal of 61113979 is 97931116.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61113979 - 2³ = 61113971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61113971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61174 + ... + 62164.

It is an arithmetic number, because the mean of its divisors is an integer number (7749504).

Almost surely, 2^61113979 is an apocalyptic number.

61113979 is a deficient number, since it is larger than the sum of its proper divisors (882053).

61113979 is an equidigital number, since it uses as much as digits as its factorization.

61113979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1817.

The product of its digits is 10206, while the sum is 37.

The square root of 61113979 is about 7817.5430283434. The cubic root of 61113979 is about 393.8947450038.

The spelling of 61113979 in words is "sixty-one million, one hundred thirteen thousand, nine hundred seventy-nine".