63604020 has 48 divisors (see below), whose sum is σ = 187467840. Its totient is φ = 16068096.

The previous prime is 63603983. The next prime is 63604027. The reversal of 63604020 is 2040636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63604027) 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, 26757 + ... + 29036.

It is an arithmetic number, because the mean of its divisors is an integer number (3905580).

Almost surely, 2^63604020 is an apocalyptic number.

63604020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63604020 is an abundant number, since it is smaller than the sum of its proper divisors (123863820).

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

63604020 is a wasteful number, since it uses less digits than its factorization.

63604020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55824 (or 55822 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 63604020 is about 7975.2128498241. The cubic root of 63604020 is about 399.1733344036.

Adding to 63604020 its reverse (2040636), we get a palindrome (65644656).

The spelling of 63604020 in words is "sixty-three million, six hundred four thousand, twenty".