78887023 has 2 divisors, whose sum is σ = 78887024. Its totient is φ = 78887022.

The previous prime is 78886981. The next prime is 78887063. The reversal of 78887023 is 32078887.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78887023 - 2²¹ = 76789871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78887063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39443511 + 39443512.

It is an arithmetic number, because the mean of its divisors is an integer number (39443512).

Almost surely, 2^78887023 is an apocalyptic number.

78887023 is a deficient number, since it is larger than the sum of its proper divisors (1).

78887023 is an equidigital number, since it uses as much as digits as its factorization.

78887023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 150528, while the sum is 43.

The square root of 78887023 is about 8881.8366906851. The cubic root of 78887023 is about 428.8794023866.

The spelling of 78887023 in words is "seventy-eight million, eight hundred eighty-seven thousand, twenty-three".