63900858 has 64 divisors (see below), whose sum is σ = 159694848. Its totient is φ = 16623360.

The previous prime is 63900803. The next prime is 63900899. The reversal of 63900858 is 85800936.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20691 + ... + 23577.

It is an arithmetic number, because the mean of its divisors is an integer number (2495232).

Almost surely, 2^63900858 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63900858, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79847424).

63900858 is an abundant number, since it is smaller than the sum of its proper divisors (95793990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63900858 is a wasteful number, since it uses less digits than its factorization.

63900858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2947.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 63900858 is about 7993.8012234481. The cubic root of 63900858 is about 399.7933474218.

The spelling of 63900858 in words is "sixty-three million, nine hundred thousand, eight hundred fifty-eight".