63704225 has 24 divisors (see below), whose sum is σ = 87827712. Its totient is φ = 45518400.

The previous prime is 63704209. The next prime is 63704231. The reversal of 63704225 is 52240736.

It is not a de Polignac number, because 63704225 - 2⁴ = 63704209 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6914 + ... + 13236.

It is an arithmetic number, because the mean of its divisors is an integer number (3659488).

Almost surely, 2^63704225 is an apocalyptic number.

63704225 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

63704225 is a deficient number, since it is larger than the sum of its proper divisors (24123487).

63704225 is a wasteful number, since it uses less digits than its factorization.

63704225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6377 (or 6372 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 63704225 is about 7981.4926548861. The cubic root of 63704225 is about 399.3828503889.

The spelling of 63704225 in words is "sixty-three million, seven hundred four thousand, two hundred twenty-five".