63206656 has 36 divisors (see below), whose sum is σ = 129595732. Its totient is φ = 30744576.

The previous prime is 63206651. The next prime is 63206659. The reversal of 63206656 is 65660236.

It can be written as a sum of positive squares in 2 ways, for example, as 27206656 + 36000000 = 5216^2 + 6000^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63206651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6136 + ... + 12808.

Almost surely, 2^63206656 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 63206656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64797866).

63206656 is an abundant number, since it is smaller than the sum of its proper divisors (66389076).

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

63206656 is an equidigital number, since it uses as much as digits as its factorization.

63206656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6726 (or 6712 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 63206656 is about 7950.2613793510. The cubic root of 63206656 is about 398.3403232066.

The spelling of 63206656 in words is "sixty-three million, two hundred six thousand, six hundred fifty-six".