86801636 has 6 divisors (see below), whose sum is σ = 151902870. Its totient is φ = 43400816.

The previous prime is 86801629. The next prime is 86801639. The reversal of 86801636 is 63610868.

It can be written as a sum of positive squares in only one way, i.e., 83356900 + 3444736 = 9130^2 + 1856^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 86801636.

It is not an unprimeable number, because it can be changed into a prime (86801639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10850201 + ... + 10850208.

It is an arithmetic number, because the mean of its divisors is an integer number (25317145).

Almost surely, 2^86801636 is an apocalyptic number.

It is an amenable number.

86801636 is a deficient number, since it is larger than the sum of its proper divisors (65101234).

86801636 is a wasteful number, since it uses less digits than its factorization.

86801636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21700413 (or 21700411 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 86801636 is about 9316.7395584507. The cubic root of 86801636 is about 442.7677394869.

The spelling of 86801636 in words is "eighty-six million, eight hundred one thousand, six hundred thirty-six".