79681027 has 4 divisors (see below), whose sum is σ = 81376416. Its totient is φ = 77985640.

The previous prime is 79681013. The next prime is 79681061. The reversal of 79681027 is 72018697.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72018697 = 199 ⋅361903.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79681027 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79651027) 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, 847624 + ... + 847717.

It is an arithmetic number, because the mean of its divisors is an integer number (20344104).

Almost surely, 2^79681027 is an apocalyptic number.

79681027 is a deficient number, since it is larger than the sum of its proper divisors (1695389).

79681027 is a wasteful number, since it uses less digits than its factorization.

79681027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695388.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 79681027 is about 8926.4229677962. The cubic root of 79681027 is about 430.3135031234.

The spelling of 79681027 in words is "seventy-nine million, six hundred eighty-one thousand, twenty-seven".