79706563 has 4 divisors (see below), whose sum is σ = 81560248. Its totient is φ = 77852880.

The previous prime is 79706537. The next prime is 79706567. The reversal of 79706563 is 36560797.

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

It is a cyclic number.

It is not a de Polignac number, because 79706563 - 2¹³ = 79698371 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 1853641 = 79706563 / (7 + 9 + 7 + 0 + 6 + 5 + 6 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79706567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 926778 + ... + 926863.

It is an arithmetic number, because the mean of its divisors is an integer number (20390062).

Almost surely, 2^79706563 is an apocalyptic number.

79706563 is a deficient number, since it is larger than the sum of its proper divisors (1853685).

79706563 is a wasteful number, since it uses less digits than its factorization.

79706563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1853684.

The product of its (nonzero) digits is 238140, while the sum is 43.

The square root of 79706563 is about 8927.8532133991. The cubic root of 79706563 is about 430.3594668548.

The spelling of 79706563 in words is "seventy-nine million, seven hundred six thousand, five hundred sixty-three".