80712970 has 16 divisors (see below), whose sum is σ = 156459240. Its totient is φ = 29801664.

The previous prime is 80712967. The next prime is 80712979. The reversal of 80712970 is 7921708.

It can be written as a sum of positive squares in 4 ways, for example, as 34703881 + 46009089 = 5891^2 + 6783^2 .

It is not an unprimeable number, because it can be changed into a prime (80712979) 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, 310305 + ... + 310564.

Almost surely, 2^80712970 is an apocalyptic number.

80712970 is a deficient number, since it is larger than the sum of its proper divisors (75746270).

80712970 is a wasteful number, since it uses less digits than its factorization.

80712970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620889.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 80712970 is about 8984.0397372229. The cubic root of 80712970 is about 432.1631935164.

The spelling of 80712970 in words is "eighty million, seven hundred twelve thousand, nine hundred seventy".