80645499 has 12 divisors (see below), whose sum is σ = 127077912. Its totient is φ = 48876000.

The previous prime is 80645479. The next prime is 80645527. The reversal of 80645499 is 99454608.

It is a happy number.

It is not a de Polignac number, because 80645499 - 2¹² = 80641403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80645449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 407202 + ... + 407399.

It is an arithmetic number, because the mean of its divisors is an integer number (10589826).

Almost surely, 2^80645499 is an apocalyptic number.

80645499 is a deficient number, since it is larger than the sum of its proper divisors (46432413).

80645499 is a wasteful number, since it uses less digits than its factorization.

80645499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814618 (or 814615 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 80645499 is about 8980.2839041981. The cubic root of 80645499 is about 432.0427394700.

The spelling of 80645499 in words is "eighty million, six hundred forty-five thousand, four hundred ninety-nine".