86517620 has 24 divisors (see below), whose sum is σ = 207642624. Its totient is φ = 29663136.

The previous prime is 86517617. The next prime is 86517649. The reversal of 86517620 is 2671568.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308852 + ... + 309131.

It is an arithmetic number, because the mean of its divisors is an integer number (8651776).

Almost surely, 2^86517620 is an apocalyptic number.

It is an amenable number.

86517620 is an abundant number, since it is smaller than the sum of its proper divisors (121125004).

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

86517620 is a wasteful number, since it uses less digits than its factorization.

86517620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617999 (or 617997 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 86517620 is about 9301.4848277036. The cubic root of 86517620 is about 442.2842980327.

The spelling of 86517620 in words is "eighty-six million, five hundred seventeen thousand, six hundred twenty".