80986757 has 4 divisors (see below), whose sum is σ = 81624576. Its totient is φ = 80348940.

The previous prime is 80986751. The next prime is 80986769. The reversal of 80986757 is 75768908.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80986757 - 2⁶ = 80986693 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 (80986751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 318719 + ... + 318972.

It is an arithmetic number, because the mean of its divisors is an integer number (20406144).

Almost surely, 2^80986757 is an apocalyptic number.

It is an amenable number.

80986757 is a deficient number, since it is larger than the sum of its proper divisors (637819).

80986757 is a wasteful number, since it uses less digits than its factorization.

80986757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637818.

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

The square root of 80986757 is about 8999.2642477038. The cubic root of 80986757 is about 432.6512899169.

The spelling of 80986757 in words is "eighty million, nine hundred eighty-six thousand, seven hundred fifty-seven".