86213508 has 12 divisors (see below), whose sum is σ = 201164880. Its totient is φ = 28737832.

The previous prime is 86213483. The next prime is 86213509. The reversal of 86213508 is 80531268.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (86213509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3592218 + ... + 3592241.

It is an arithmetic number, because the mean of its divisors is an integer number (16763740).

Almost surely, 2^86213508 is an apocalyptic number.

It is an amenable number.

86213508 is an abundant number, since it is smaller than the sum of its proper divisors (114951372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86213508 is a wasteful number, since it uses less digits than its factorization.

86213508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7184466 (or 7184464 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 86213508 is about 9285.1229394123. The cubic root of 86213508 is about 441.7654755236.

The spelling of 86213508 in words is "eighty-six million, two hundred thirteen thousand, five hundred eight".