80078643 has 6 divisors (see below), whose sum is σ = 115669164. Its totient is φ = 53385756.

The previous prime is 80078639. The next prime is 80078651. The reversal of 80078643 is 34687008.

80078643 is a `hidden beast` number, since 8 + 0 + 0 + 7 + 8 + 643 = 666.

It is not a de Polignac number, because 80078643 - 2² = 80078639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80078598 and 80078607.

It is not an unprimeable number, because it can be changed into a prime (80078443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4448805 + ... + 4448822.

It is an arithmetic number, because the mean of its divisors is an integer number (19278194).

Almost surely, 2^80078643 is an apocalyptic number.

80078643 is a deficient number, since it is larger than the sum of its proper divisors (35590521).

80078643 is a wasteful number, since it uses less digits than its factorization.

80078643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8897633 (or 8897630 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 80078643 is about 8948.6671074524. The cubic root of 80078643 is about 431.0280844385.

The spelling of 80078643 in words is "eighty million, seventy-eight thousand, six hundred forty-three".