63406212 has 12 divisors (see below), whose sum is σ = 147947856. Its totient is φ = 21135400.

The previous prime is 63406199. The next prime is 63406219. The reversal of 63406212 is 21260436.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (63406219) 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, 2641914 + ... + 2641937.

It is an arithmetic number, because the mean of its divisors is an integer number (12328988).

Almost surely, 2^63406212 is an apocalyptic number.

It is an amenable number.

63406212 is an abundant number, since it is smaller than the sum of its proper divisors (84541644).

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

63406212 is a wasteful number, since it uses less digits than its factorization.

63406212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5283858 (or 5283856 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 63406212 is about 7962.8017682220. The cubic root of 63406212 is about 398.7590960409.

Adding to 63406212 its reverse (21260436), we get a palindrome (84666648).

The spelling of 63406212 in words is "sixty-three million, four hundred six thousand, two hundred twelve".