80664497 has 2 divisors, whose sum is σ = 80664498. Its totient is φ = 80664496.

The previous prime is 80664487. The next prime is 80664503. The reversal of 80664497 is 79446608.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50183056 + 30481441 = 7084^2 + 5521^2 .

It is a cyclic number.

It is not a de Polignac number, because 80664497 - 2⁶ = 80664433 is a prime.

It is a super-2 number, since 2×80664497² = 13013522152526018, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80664407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40332248 + 40332249.

It is an arithmetic number, because the mean of its divisors is an integer number (40332249).

Almost surely, 2^80664497 is an apocalyptic number.

It is an amenable number.

80664497 is a deficient number, since it is larger than the sum of its proper divisors (1).

80664497 is an equidigital number, since it uses as much as digits as its factorization.

80664497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 80664497 is about 8981.3416035690. The cubic root of 80664497 is about 432.0766628492.

The spelling of 80664497 in words is "eighty million, six hundred sixty-four thousand, four hundred ninety-seven".