80672491 has 2 divisors, whose sum is σ = 80672492. Its totient is φ = 80672490.

The previous prime is 80672483. The next prime is 80672503. The reversal of 80672491 is 19427608.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80672491 - 2³ = 80672483 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80672491.

It is not a weakly prime, because it can be changed into another prime (80672791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40336245 + 40336246.

It is an arithmetic number, because the mean of its divisors is an integer number (40336246).

Almost surely, 2^80672491 is an apocalyptic number.

80672491 is a deficient number, since it is larger than the sum of its proper divisors (1).

80672491 is an equidigital number, since it uses as much as digits as its factorization.

80672491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 80672491 is about 8981.7866262788. The cubic root of 80672491 is about 432.0909355750.

The spelling of 80672491 in words is "eighty million, six hundred seventy-two thousand, four hundred ninety-one".