80078647 has 12 divisors (see below), whose sum is σ = 89899488. Its totient is φ = 71244800.

The previous prime is 80078639. The next prime is 80078651. The reversal of 80078647 is 74687008.

It is not a de Polignac number, because 80078647 - 2³ = 80078639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80078627) 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, 1354 + ... + 12727.

It is an arithmetic number, because the mean of its divisors is an integer number (7491624).

Almost surely, 2^80078647 is an apocalyptic number.

80078647 is a deficient number, since it is larger than the sum of its proper divisors (9820841).

80078647 is a wasteful number, since it uses less digits than its factorization.

80078647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14150 (or 14139 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 80078647 is about 8948.6673309493. The cubic root of 80078647 is about 431.0280916152.

The spelling of 80078647 in words is "eighty million, seventy-eight thousand, six hundred forty-seven".