86938570 has 32 divisors (see below), whose sum is σ = 163109376. Its totient is φ = 33326400.

The previous prime is 86938529. The next prime is 86938571. The reversal of 86938570 is 7583968.

It is a self number, because there is not a number n which added to its sum of digits gives 86938570.

It is not an unprimeable number, because it can be changed into a prime (86938571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31860 + ... + 34480.

It is an arithmetic number, because the mean of its divisors is an integer number (5097168).

Almost surely, 2^86938570 is an apocalyptic number.

86938570 is a deficient number, since it is larger than the sum of its proper divisors (76170806).

86938570 is a wasteful number, since it uses less digits than its factorization.

86938570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2766.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 86938570 is about 9324.0854779437. The cubic root of 86938570 is about 443.0004467110. Note that the first 3 decimals are identical.

The spelling of 86938570 in words is "eighty-six million, nine hundred thirty-eight thousand, five hundred seventy".