78660423 has 16 divisors (see below), whose sum is σ = 120294400. Its totient is φ = 50748120.

The previous prime is 78660419. The next prime is 78660443. The reversal of 78660423 is 32406687.

It is not a de Polignac number, because 78660423 - 2² = 78660419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78660443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46153 + ... + 47826.

It is an arithmetic number, because the mean of its divisors is an integer number (7518400).

Almost surely, 2^78660423 is an apocalyptic number.

78660423 is a deficient number, since it is larger than the sum of its proper divisors (41633977).

78660423 is a wasteful number, since it uses less digits than its factorization.

78660423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94019 (or 94013 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 78660423 is about 8869.0711464054. The cubic root of 78660423 is about 428.4683619299.

The spelling of 78660423 in words is "seventy-eight million, six hundred sixty thousand, four hundred twenty-three".