79780699 has 6 divisors (see below), whose sum is σ = 80335500. Its totient is φ = 79229700.

The previous prime is 79780681. The next prime is 79780733. The reversal of 79780699 is 99608797.

It is not a de Polignac number, because 79780699 - 2¹⁷ = 79649627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79786699) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21052 + ... + 24550.

It is an arithmetic number, because the mean of its divisors is an integer number (13389250).

Almost surely, 2^79780699 is an apocalyptic number.

79780699 is a deficient number, since it is larger than the sum of its proper divisors (554801).

79780699 is an equidigital number, since it uses as much as digits as its factorization.

79780699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3801 (or 3650 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 55.

The square root of 79780699 is about 8932.0041983868. The cubic root of 79780699 is about 430.4928529549.

The spelling of 79780699 in words is "seventy-nine million, seven hundred eighty thousand, six hundred ninety-nine".