80779957 has 8 divisors (see below), whose sum is σ = 82423616. Its totient is φ = 79149312.

The previous prime is 80779943. The next prime is 80779961. The reversal of 80779957 is 75997708.

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 80779957 - 2¹⁵ = 80747189 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 (80779927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9808 + ... + 16054.

It is an arithmetic number, because the mean of its divisors is an integer number (10302952).

Almost surely, 2^80779957 is an apocalyptic number.

It is an amenable number.

80779957 is a deficient number, since it is larger than the sum of its proper divisors (1643659).

80779957 is a wasteful number, since it uses less digits than its factorization.

80779957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6507.

The product of its (nonzero) digits is 1111320, while the sum is 52.

The square root of 80779957 is about 8987.7670753085. The cubic root of 80779957 is about 432.2827171022.

The spelling of 80779957 in words is "eighty million, seven hundred seventy-nine thousand, nine hundred fifty-seven".