63613420 has 24 divisors (see below), whose sum is σ = 143864784. Its totient is φ = 23487936.

The previous prime is 63613399. The next prime is 63613453. The reversal of 63613420 is 2431636.

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, 122074 + ... + 122593.

It is an arithmetic number, because the mean of its divisors is an integer number (5994366).

Almost surely, 2^63613420 is an apocalyptic number.

It is an amenable number.

63613420 is an abundant number, since it is smaller than the sum of its proper divisors (80251364).

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

63613420 is a wasteful number, since it uses less digits than its factorization.

63613420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244689 (or 244687 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 63613420 is about 7975.8021540156. The cubic root of 63613420 is about 399.1929979642.

The spelling of 63613420 in words is "sixty-three million, six hundred thirteen thousand, four hundred twenty".