86850731 has 4 divisors (see below), whose sum is σ = 94746264. Its totient is φ = 78955200.

The previous prime is 86850727. The next prime is 86850749. The reversal of 86850731 is 13705868.

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 86850731 - 2² = 86850727 is a prime.

It is a super-2 number, since 2×86850731² = 15086098950468722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86850721) 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, 3947750 + ... + 3947771.

It is an arithmetic number, because the mean of its divisors is an integer number (23686566).

Almost surely, 2^86850731 is an apocalyptic number.

86850731 is a deficient number, since it is larger than the sum of its proper divisors (7895533).

86850731 is a wasteful number, since it uses less digits than its factorization.

86850731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7895532.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 86850731 is about 9319.3739596606. The cubic root of 86850731 is about 442.8512002225.

The spelling of 86850731 in words is "eighty-six million, eight hundred fifty thousand, seven hundred thirty-one".