86691534 has 16 divisors (see below), whose sum is σ = 183582288. Its totient is φ = 27197312.

The previous prime is 86691533. The next prime is 86691559. The reversal of 86691534 is 43519668.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86691533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 424857 + ... + 425060.

It is an arithmetic number, because the mean of its divisors is an integer number (11473893).

Almost surely, 2^86691534 is an apocalyptic number.

86691534 is an abundant number, since it is smaller than the sum of its proper divisors (96890754).

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

86691534 is a wasteful number, since it uses less digits than its factorization.

86691534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849939.

The product of its digits is 155520, while the sum is 42.

The square root of 86691534 is about 9310.8288567667. The cubic root of 86691534 is about 442.5804533085.

The spelling of 86691534 in words is "eighty-six million, six hundred ninety-one thousand, five hundred thirty-four".