63604998 has 48 divisors (see below), whose sum is σ = 144892176. Its totient is φ = 20139840.

The previous prime is 63604997. The next prime is 63605021. The reversal of 63604998 is 89940636.

63604998 is a `hidden beast` number, since 636 + 0 + 4 + 9 + 9 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63604993) 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 23 ways as a sum of consecutive naturals, for example, 27528 + ... + 29748.

It is an arithmetic number, because the mean of its divisors is an integer number (3018587).

Almost surely, 2^63604998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63604998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72446088).

63604998 is an abundant number, since it is smaller than the sum of its proper divisors (81287178).

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

63604998 is a wasteful number, since it uses less digits than its factorization.

63604998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2309 (or 2306 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 63604998 is about 7975.2741645664. The cubic root of 63604998 is about 399.1753803409.

The spelling of 63604998 in words is "sixty-three million, six hundred four thousand, nine hundred ninety-eight".