80978683 has 2 divisors, whose sum is σ = 80978684. Its totient is φ = 80978682.

The previous prime is 80978671. The next prime is 80978687. The reversal of 80978683 is 38687908.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80978683 is a prime.

It is not a weakly prime, because it can be changed into another prime (80978687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40489341 + 40489342.

It is an arithmetic number, because the mean of its divisors is an integer number (40489342).

Almost surely, 2^80978683 is an apocalyptic number.

80978683 is a deficient number, since it is larger than the sum of its proper divisors (1).

80978683 is an equidigital number, since it uses as much as digits as its factorization.

80978683 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 80978683 is about 8998.8156442945. The cubic root of 80978683 is about 432.6369116706.

The spelling of 80978683 in words is "eighty million, nine hundred seventy-eight thousand, six hundred eighty-three".