78423683 has 16 divisors (see below), whose sum is σ = 88609920. Its totient is φ = 68916096.

The previous prime is 78423679. The next prime is 78423691. The reversal of 78423683 is 38632487.

It is a cyclic number.

It is not a de Polignac number, because 78423683 - 2² = 78423679 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78423683.

It is not an unprimeable number, because it can be changed into a prime (78423673) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20873 + ... + 24341.

It is an arithmetic number, because the mean of its divisors is an integer number (5538120).

Almost surely, 2^78423683 is an apocalyptic number.

78423683 is a deficient number, since it is larger than the sum of its proper divisors (10186237).

78423683 is a wasteful number, since it uses less digits than its factorization.

78423683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3566.

The product of its digits is 193536, while the sum is 41.

The square root of 78423683 is about 8855.7147085935. The cubic root of 78423683 is about 428.0380839987.

The spelling of 78423683 in words is "seventy-eight million, four hundred twenty-three thousand, six hundred eighty-three".