78564883 has 2 divisors, whose sum is σ = 78564884. Its totient is φ = 78564882.

The previous prime is 78564877. The next prime is 78564901. The reversal of 78564883 is 38846587.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78564883 - 2⁹ = 78564371 is a prime.

It is not a weakly prime, because it can be changed into another prime (78564823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39282441 + 39282442.

It is an arithmetic number, because the mean of its divisors is an integer number (39282442).

Almost surely, 2^78564883 is an apocalyptic number.

78564883 is a deficient number, since it is larger than the sum of its proper divisors (1).

78564883 is an equidigital number, since it uses as much as digits as its factorization.

78564883 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1290240, while the sum is 49.

The square root of 78564883 is about 8863.6833765653. The cubic root of 78564883 is about 428.2948208176.

The spelling of 78564883 in words is "seventy-eight million, five hundred sixty-four thousand, eight hundred eighty-three".