78655423 has 24 divisors (see below), whose sum is σ = 102566016. Its totient is φ = 58594800.

The previous prime is 78655403. The next prime is 78655427. The reversal of 78655423 is 32455687.

It is not a de Polignac number, because 78655423 - 2⁵ = 78655391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78655427) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39768 + ... + 41698.

It is an arithmetic number, because the mean of its divisors is an integer number (4273584).

Almost surely, 2^78655423 is an apocalyptic number.

78655423 is a deficient number, since it is larger than the sum of its proper divisors (23910593).

78655423 is a wasteful number, since it uses less digits than its factorization.

78655423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1995 (or 1972 counting only the distinct ones).

The product of its digits is 201600, while the sum is 40.

The square root of 78655423 is about 8868.7892634790. The cubic root of 78655423 is about 428.4592832975.

The spelling of 78655423 in words is "seventy-eight million, six hundred fifty-five thousand, four hundred twenty-three".