63406812 has 48 divisors (see below), whose sum is σ = 170069760. Its totient is φ = 18010752.

The previous prime is 63406793. The next prime is 63406813. The reversal of 63406812 is 21860436.

It is a self number, because there is not a number n which added to its sum of digits gives 63406812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63406813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12928 + ... + 17144.

It is an arithmetic number, because the mean of its divisors is an integer number (3543120).

Almost surely, 2^63406812 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 63406812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85034880).

63406812 is an abundant number, since it is smaller than the sum of its proper divisors (106662948).

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

63406812 is a wasteful number, since it uses less digits than its factorization.

63406812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4410 (or 4408 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 63406812 is about 7962.8394433142. The cubic root of 63406812 is about 398.7603538288.

The spelling of 63406812 in words is "sixty-three million, four hundred six thousand, eight hundred twelve".