86140697 has 4 divisors (see below), whose sum is σ = 87108660. Its totient is φ = 85172736.

The previous prime is 86140673. The next prime is 86140709. The reversal of 86140697 is 79604168.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39300361 + 46840336 = 6269^2 + 6844^2 .

It is a cyclic number.

It is not a de Polignac number, because 86140697 - 2⁸ = 86140441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86140097) 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, 483848 + ... + 484025.

It is an arithmetic number, because the mean of its divisors is an integer number (21777165).

Almost surely, 2^86140697 is an apocalyptic number.

It is an amenable number.

86140697 is a deficient number, since it is larger than the sum of its proper divisors (967963).

86140697 is an equidigital number, since it uses as much as digits as its factorization.

86140697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967962.

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

The square root of 86140697 is about 9281.2012692323. The cubic root of 86140697 is about 441.6410772089.

The spelling of 86140697 in words is "eighty-six million, one hundred forty thousand, six hundred ninety-seven".