79564247 has 8 divisors (see below), whose sum is σ = 91440000. Its totient is φ = 67815864.

The previous prime is 79564241. The next prime is 79564249. The reversal of 79564247 is 74246597.

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

It is a cyclic number.

It is not a de Polignac number, because 79564247 - 2¹⁸ = 79302103 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79564198 and 79564207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79564241) 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, 30497 + ... + 33002.

It is an arithmetic number, because the mean of its divisors is an integer number (11430000).

Almost surely, 2^79564247 is an apocalyptic number.

79564247 is a deficient number, since it is larger than the sum of its proper divisors (11875753).

79564247 is a wasteful number, since it uses less digits than its factorization.

79564247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63685.

The product of its digits is 423360, while the sum is 44.

The square root of 79564247 is about 8919.8793153271. The cubic root of 79564247 is about 430.1031787736.

The spelling of 79564247 in words is "seventy-nine million, five hundred sixty-four thousand, two hundred forty-seven".