79140061 has 32 divisors (see below), whose sum is σ = 107106048. Its totient is φ = 56471040.

The previous prime is 79140059. The next prime is 79140091. The reversal of 79140061 is 16004197.

It is a cyclic number.

It is not a de Polignac number, because 79140061 - 2¹ = 79140059 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79140011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 172945 + ... + 173401.

It is an arithmetic number, because the mean of its divisors is an integer number (3347064).

Almost surely, 2^79140061 is an apocalyptic number.

It is an amenable number.

79140061 is a deficient number, since it is larger than the sum of its proper divisors (27965987).

79140061 is a wasteful number, since it uses less digits than its factorization.

79140061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 79140061 is about 8896.0699749946. The cubic root of 79140061 is about 429.3374707983.

The spelling of 79140061 in words is "seventy-nine million, one hundred forty thousand, sixty-one".