80972770 has 8 divisors (see below), whose sum is σ = 145751004. Its totient is φ = 32389104.

The previous prime is 80972747. The next prime is 80972777. The reversal of 80972770 is 7727908.

It can be written as a sum of positive squares in 2 ways, for example, as 80838081 + 134689 = 8991^2 + 367^2 .

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

It is not an unprimeable number, because it can be changed into a prime (80972777) 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, 4048629 + ... + 4048648.

Almost surely, 2^80972770 is an apocalyptic number.

80972770 is a deficient number, since it is larger than the sum of its proper divisors (64778234).

80972770 is a wasteful number, since it uses less digits than its factorization.

80972770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8097284.

The product of its (nonzero) digits is 49392, while the sum is 40.

The square root of 80972770 is about 8998.4870950621. The cubic root of 80972770 is about 432.6263811448.

The spelling of 80972770 in words is "eighty million, nine hundred seventy-two thousand, seven hundred seventy".