79766709 has 24 divisors (see below), whose sum is σ = 120083040. Its totient is φ = 47028960.

The previous prime is 79766699. The next prime is 79766717. The reversal of 79766709 is 90766797.

It is not a de Polignac number, because 79766709 - 2¹¹ = 79764661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79766719) 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 23 ways as a sum of consecutive naturals, for example, 10462 + ... + 16400.

It is an arithmetic number, because the mean of its divisors is an integer number (5003460).

Almost surely, 2^79766709 is an apocalyptic number.

It is an amenable number.

79766709 is a deficient number, since it is larger than the sum of its proper divisors (40316331).

79766709 is a wasteful number, since it uses less digits than its factorization.

79766709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6001 (or 5990 counting only the distinct ones).

The product of its (nonzero) digits is 1000188, while the sum is 51.

The square root of 79766709 is about 8931.2210251454. The cubic root of 79766709 is about 430.4676883593.

The spelling of 79766709 in words is "seventy-nine million, seven hundred sixty-six thousand, seven hundred nine".