61199079 has 8 divisors (see below), whose sum is σ = 81799920. Its totient is φ = 40698816.

The previous prime is 61199063. The next prime is 61199087. The reversal of 61199079 is 97099116.

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

It is not a de Polignac number, because 61199079 - 2⁴ = 61199063 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61199079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61199179) 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, 23712 + ... + 26165.

It is an arithmetic number, because the mean of its divisors is an integer number (10224990).

Almost surely, 2^61199079 is an apocalyptic number.

61199079 is a deficient number, since it is larger than the sum of its proper divisors (20600841).

61199079 is a wasteful number, since it uses less digits than its factorization.

61199079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50289.

The product of its (nonzero) digits is 30618, while the sum is 42.

The square root of 61199079 is about 7822.9840214588. The cubic root of 61199079 is about 394.0774904058.

The spelling of 61199079 in words is "sixty-one million, one hundred ninety-nine thousand, seventy-nine".