86861836 has 12 divisors (see below), whose sum is σ = 153118728. Its totient is φ = 43113632.

The previous prime is 86861809. The next prime is 86861837. The reversal of 86861836 is 63816868.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (86861837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78706 + ... + 79801.

It is an arithmetic number, because the mean of its divisors is an integer number (12759894).

Almost surely, 2^86861836 is an apocalyptic number.

It is an amenable number.

86861836 is a deficient number, since it is larger than the sum of its proper divisors (66256892).

86861836 is a wasteful number, since it uses less digits than its factorization.

86861836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158648 (or 158646 counting only the distinct ones).

The product of its digits is 331776, while the sum is 46.

The square root of 86861836 is about 9319.9697424402. The cubic root of 86861836 is about 442.8700741876.

The spelling of 86861836 in words is "eighty-six million, eight hundred sixty-one thousand, eight hundred thirty-six".