86691407 has 16 divisors (see below), whose sum is σ = 100276224. Its totient is φ = 74196000.

The previous prime is 86691403. The next prime is 86691413. The reversal of 86691407 is 70419668.

It is a cyclic number.

It is not a de Polignac number, because 86691407 - 2² = 86691403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86691403) 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, 9182 + ... + 16052.

It is an arithmetic number, because the mean of its divisors is an integer number (6267264).

Almost surely, 2^86691407 is an apocalyptic number.

86691407 is a deficient number, since it is larger than the sum of its proper divisors (13584817).

86691407 is a wasteful number, since it uses less digits than its factorization.

86691407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6950.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 86691407 is about 9310.8220367484. The cubic root of 86691407 is about 442.5802371869.

The spelling of 86691407 in words is "eighty-six million, six hundred ninety-one thousand, four hundred seven".