80879765 has 8 divisors (see below), whose sum is σ = 98225568. Its totient is φ = 63923920.

The previous prime is 80879741. The next prime is 80879767. The reversal of 80879765 is 56797808.

It is a happy number.

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

It is not a de Polignac number, because 80879765 - 2⁸ = 80879509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80879767) 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, 97031 + ... + 97860.

It is an arithmetic number, because the mean of its divisors is an integer number (12278196).

Almost surely, 2^80879765 is an apocalyptic number.

It is an amenable number.

80879765 is a deficient number, since it is larger than the sum of its proper divisors (17345803).

80879765 is a wasteful number, since it uses less digits than its factorization.

80879765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194979.

The product of its (nonzero) digits is 846720, while the sum is 50.

The square root of 80879765 is about 8993.3177971203. The cubic root of 80879765 is about 432.4606800433.

The spelling of 80879765 in words is "eighty million, eight hundred seventy-nine thousand, seven hundred sixty-five".