79681627 has 4 divisors (see below), whose sum is σ = 80470656. Its totient is φ = 78892600.

The previous prime is 79681603. The next prime is 79681639. The reversal of 79681627 is 72618697.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79681627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79681697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 394363 + ... + 394564.

It is an arithmetic number, because the mean of its divisors is an integer number (20117664).

Almost surely, 2^79681627 is an apocalyptic number.

79681627 is a deficient number, since it is larger than the sum of its proper divisors (789029).

79681627 is a wasteful number, since it uses less digits than its factorization.

79681627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789028.

The product of its digits is 254016, while the sum is 46.

The square root of 79681627 is about 8926.4565758200. The cubic root of 79681627 is about 430.3145832110.

It can be divided in two parts, 79681 and 627, that added together give a palindrome (80308).

The spelling of 79681627 in words is "seventy-nine million, six hundred eighty-one thousand, six hundred twenty-seven".