78623086 has 4 divisors (see below), whose sum is σ = 117934632. Its totient is φ = 39311542.

The previous prime is 78623063. The next prime is 78623101. The reversal of 78623086 is 68032687.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19655770 + ... + 19655773.

It is an arithmetic number, because the mean of its divisors is an integer number (29483658).

Almost surely, 2^78623086 is an apocalyptic number.

78623086 is a deficient number, since it is larger than the sum of its proper divisors (39311546).

78623086 is a wasteful number, since it uses less digits than its factorization.

78623086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39311545.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 78623086 is about 8866.9659974537. The cubic root of 78623086 is about 428.4005588575.

The spelling of 78623086 in words is "seventy-eight million, six hundred twenty-three thousand, eighty-six".