80644297 has 2 divisors, whose sum is σ = 80644298. Its totient is φ = 80644296.

The previous prime is 80644271. The next prime is 80644301. The reversal of 80644297 is 79244608.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72182016 + 8462281 = 8496^2 + 2909^2 .

It is a cyclic number.

It is not a de Polignac number, because 80644297 - 2⁷ = 80644169 is a prime.

It is not a weakly prime, because it can be changed into another prime (80644397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40322148 + 40322149.

It is an arithmetic number, because the mean of its divisors is an integer number (40322149).

Almost surely, 2^80644297 is an apocalyptic number.

It is an amenable number.

80644297 is a deficient number, since it is larger than the sum of its proper divisors (1).

80644297 is an equidigital number, since it uses as much as digits as its factorization.

80644297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 80644297 is about 8980.2169795612. The cubic root of 80644297 is about 432.0405929648.

The spelling of 80644297 in words is "eighty million, six hundred forty-four thousand, two hundred ninety-seven".