80645967 has 12 divisors (see below), whose sum is σ = 116602200. Its totient is φ = 53711568.

The previous prime is 80645959. The next prime is 80645969. The reversal of 80645967 is 76954608.

It is not a de Polignac number, because 80645967 - 2³ = 80645959 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80645969) 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, 6909 + ... + 14457.

It is an arithmetic number, because the mean of its divisors is an integer number (9716850).

Almost surely, 2^80645967 is an apocalyptic number.

80645967 is a deficient number, since it is larger than the sum of its proper divisors (35956233).

80645967 is a wasteful number, since it uses less digits than its factorization.

80645967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8742 (or 8739 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 80645967 is about 8980.3099612430. The cubic root of 80645967 is about 432.0435752084.

The spelling of 80645967 in words is "eighty million, six hundred forty-five thousand, nine hundred sixty-seven".