63465220 has 48 divisors (see below), whose sum is σ = 164037888. Its totient is φ = 20085120.

The previous prime is 63465197. The next prime is 63465229. The reversal of 63465220 is 2256436.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (63465229) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 15616 + ... + 19255.

It is an arithmetic number, because the mean of its divisors is an integer number (3417456).

Almost surely, 2^63465220 is an apocalyptic number.

It is an amenable number.

63465220 is an abundant number, since it is smaller than the sum of its proper divisors (100572668).

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

63465220 is a wasteful number, since it uses less digits than its factorization.

63465220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34900 (or 34898 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 63465220 is about 7966.5061350632. The cubic root of 63465220 is about 398.8827573274.

The spelling of 63465220 in words is "sixty-three million, four hundred sixty-five thousand, two hundred twenty".