86623790 has 16 divisors (see below), whose sum is σ = 170097840. Its totient is φ = 31499520.

The previous prime is 86623787. The next prime is 86623799. The reversal of 86623790 is 9732668.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86623799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 393635 + ... + 393854.

It is an arithmetic number, because the mean of its divisors is an integer number (10631115).

Almost surely, 2^86623790 is an apocalyptic number.

86623790 is a deficient number, since it is larger than the sum of its proper divisors (83474050).

86623790 is a wasteful number, since it uses less digits than its factorization.

86623790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787507.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 86623790 is about 9307.1902312137. The cubic root of 86623790 is about 442.4651403056.

The spelling of 86623790 in words is "eighty-six million, six hundred twenty-three thousand, seven hundred ninety".