86649908 has 6 divisors (see below), whose sum is σ = 151637346. Its totient is φ = 43324952.

The previous prime is 86649889. The next prime is 86649917. The reversal of 86649908 is 80994668.

It can be written as a sum of positive squares in only one way, i.e., 67535524 + 19114384 = 8218^2 + 4372^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10831235 + ... + 10831242.

It is an arithmetic number, because the mean of its divisors is an integer number (25272891).

Almost surely, 2^86649908 is an apocalyptic number.

It is an amenable number.

86649908 is a deficient number, since it is larger than the sum of its proper divisors (64987438).

86649908 is a wasteful number, since it uses less digits than its factorization.

86649908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21662481 (or 21662479 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 50.

The square root of 86649908 is about 9308.5932342111. The cubic root of 86649908 is about 442.5096051625.

The spelling of 86649908 in words is "eighty-six million, six hundred forty-nine thousand, nine hundred eight".