63389564 has 48 divisors (see below), whose sum is σ = 133152768. Its totient is φ = 25817088.

The previous prime is 63389527. The next prime is 63389591. The reversal of 63389564 is 46598336.

It is a super-2 number, since 2×63389564² = 8036473648220192, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165317 + ... + 165699.

It is an arithmetic number, because the mean of its divisors is an integer number (2774016).

Almost surely, 2^63389564 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 63389564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66576384).

63389564 is an abundant number, since it is smaller than the sum of its proper divisors (69763204).

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

63389564 is a wasteful number, since it uses less digits than its factorization.

63389564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674 (or 672 counting only the distinct ones).

The product of its digits is 466560, while the sum is 44.

The square root of 63389564 is about 7961.7563388991. The cubic root of 63389564 is about 398.7241934537.

The spelling of 63389564 in words is "sixty-three million, three hundred eighty-nine thousand, five hundred sixty-four".