63139700 has 72 divisors (see below), whose sum is σ = 156286872. Its totient is φ = 21934080.

The previous prime is 63139693. The next prime is 63139711. The reversal of 63139700 is 793136.

It can be written as a sum of positive squares in 12 ways, for example, as 14167696 + 48972004 = 3764^2 + 6998^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20672 + ... + 23528.

It is an arithmetic number, because the mean of its divisors is an integer number (2170651).

Almost surely, 2^63139700 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63139700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78143436).

63139700 is an abundant number, since it is smaller than the sum of its proper divisors (93147172).

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

63139700 is a wasteful number, since it uses less digits than its factorization.

63139700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2901 (or 2894 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 29.

The square root of 63139700 is about 7946.0493328446. The cubic root of 63139700 is about 398.1996170441.

The spelling of 63139700 in words is "sixty-three million, one hundred thirty-nine thousand, seven hundred".