78624023 has 2 divisors, whose sum is σ = 78624024. Its totient is φ = 78624022.

The previous prime is 78623999. The next prime is 78624037. The reversal of 78624023 is 32042687.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78624023 - 2¹² = 78619927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78624523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39312011 + 39312012.

It is an arithmetic number, because the mean of its divisors is an integer number (39312012).

Almost surely, 2^78624023 is an apocalyptic number.

78624023 is a deficient number, since it is larger than the sum of its proper divisors (1).

78624023 is an equidigital number, since it uses as much as digits as its factorization.

78624023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 78624023 is about 8867.0188338584. The cubic root of 78624023 is about 428.4022606890.

The spelling of 78624023 in words is "seventy-eight million, six hundred twenty-four thousand, twenty-three".