86007731 has 4 divisors (see below), whose sum is σ = 86974200. Its totient is φ = 85041264.

The previous prime is 86007703. The next prime is 86007739. The reversal of 86007731 is 13770068.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 86007731 - 2⁶ = 86007667 is a prime.

It is a super-2 number, since 2×86007731² = 14794659583536722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86007739) 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, 483101 + ... + 483278.

It is an arithmetic number, because the mean of its divisors is an integer number (21743550).

Almost surely, 2^86007731 is an apocalyptic number.

86007731 is a deficient number, since it is larger than the sum of its proper divisors (966469).

86007731 is an equidigital number, since it uses as much as digits as its factorization.

86007731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966468.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 86007731 is about 9274.0353137132. The cubic root of 86007731 is about 441.4137224651.

Adding to 86007731 its reverse (13770068), we get a palindrome (99777799).

The spelling of 86007731 in words is "eighty-six million, seven thousand, seven hundred thirty-one".