63206464 has 56 divisors (see below), whose sum is σ = 134416800. Its totient is φ = 29399040.

The previous prime is 63206443. The next prime is 63206501. The reversal of 63206464 is 46460236.

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, 71304 + ... + 72184.

It is an arithmetic number, because the mean of its divisors is an integer number (2400300).

Almost surely, 2^63206464 is an apocalyptic number.

63206464 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63206464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67208400).

63206464 is an abundant number, since it is smaller than the sum of its proper divisors (71210336).

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

63206464 is a wasteful number, since it uses less digits than its factorization.

63206464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971 (or 961 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 63206464 is about 7950.2493042671. The cubic root of 63206464 is about 398.3399198660.

The spelling of 63206464 in words is "sixty-three million, two hundred six thousand, four hundred sixty-four".