86205904 has 20 divisors (see below), whose sum is σ = 167516064. Its totient is φ = 42975968.

The previous prime is 86205859. The next prime is 86205961. The reversal of 86205904 is 40950268.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 86205904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2212 + ... + 13315.

Almost surely, 2^86205904 is an apocalyptic number.

It is an amenable number.

86205904 is a deficient number, since it is larger than the sum of its proper divisors (81310160).

86205904 is a wasteful number, since it uses less digits than its factorization.

86205904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15882 (or 15876 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 86205904 is about 9284.7134581526. The cubic root of 86205904 is about 441.7524872904.

It can be divided in two parts, 8620590 and 4, that multiplied together give a triangular number (34482360 = T₈₃₀₄).

The spelling of 86205904 in words is "eighty-six million, two hundred five thousand, nine hundred four".