86990518 has 4 divisors (see below), whose sum is σ = 130485780. Its totient is φ = 43495258.

The previous prime is 86990461. The next prime is 86990537. The reversal of 86990518 is 81509968.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21747628 + ... + 21747631.

It is an arithmetic number, because the mean of its divisors is an integer number (32621445).

Almost surely, 2^86990518 is an apocalyptic number.

86990518 is a deficient number, since it is larger than the sum of its proper divisors (43495262).

86990518 is a wasteful number, since it uses less digits than its factorization.

86990518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43495261.

The product of its (nonzero) digits is 155520, while the sum is 46.

The square root of 86990518 is about 9326.8707506859. The cubic root of 86990518 is about 443.0886638092.

The spelling of 86990518 in words is "eighty-six million, nine hundred ninety thousand, five hundred eighteen".