86851906 has 8 divisors (see below), whose sum is σ = 130333500. Its totient is φ = 43407408.

The previous prime is 86851903. The next prime is 86851909. The reversal of 86851906 is 60915868.

It is an interprime number because it is at equal distance from previous prime (86851903) and next prime (86851909).

It can be written as a sum of positive squares in 2 ways, for example, as 86025625 + 826281 = 9275^2 + 909^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (86851903) 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, 2401 + ... + 13396.

Almost surely, 2^86851906 is an apocalyptic number.

86851906 is a deficient number, since it is larger than the sum of its proper divisors (43481594).

86851906 is a wasteful number, since it uses less digits than its factorization.

86851906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18548.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 86851906 is about 9319.4370001626. The cubic root of 86851906 is about 442.8531973188.

The spelling of 86851906 in words is "eighty-six million, eight hundred fifty-one thousand, nine hundred six".