61979793 has 8 divisors (see below), whose sum is σ = 84398208. Its totient is φ = 40440624.

The previous prime is 61979791. The next prime is 61979803. The reversal of 61979793 is 39797916.

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

It is not a de Polignac number, because 61979793 - 2¹ = 61979791 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61979791) 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, 219646 + ... + 219927.

It is an arithmetic number, because the mean of its divisors is an integer number (10549776).

Almost surely, 2^61979793 is an apocalyptic number.

It is an amenable number.

61979793 is a deficient number, since it is larger than the sum of its proper divisors (22418415).

61979793 is a wasteful number, since it uses less digits than its factorization.

61979793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439623.

The product of its digits is 642978, while the sum is 51.

The square root of 61979793 is about 7872.7246236611. The cubic root of 61979793 is about 395.7461578465.

The spelling of 61979793 in words is "sixty-one million, nine hundred seventy-nine thousand, seven hundred ninety-three".