86490638 has 16 divisors (see below), whose sum is σ = 141686496. Its totient is φ = 39355680.

The previous prime is 86490629. The next prime is 86490653. The reversal of 86490638 is 83609468.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21581 + ... + 25272.

It is an arithmetic number, because the mean of its divisors is an integer number (8855406).

Almost surely, 2^86490638 is an apocalyptic number.

86490638 is a deficient number, since it is larger than the sum of its proper divisors (55195858).

86490638 is a wasteful number, since it uses less digits than its factorization.

86490638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46939.

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 86490638 is about 9300.0343010120. The cubic root of 86490638 is about 442.2383152771.

The spelling of 86490638 in words is "eighty-six million, four hundred ninety thousand, six hundred thirty-eight".