63361998 has 108 divisors (see below), whose sum is σ = 169392600. Its totient is φ = 17064432.

The previous prime is 63361957. The next prime is 63361999. The reversal of 63361998 is 89916336.

63361998 is a `hidden beast` number, since 633 + 6 + 1 + 9 + 9 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63361999) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 318303 + ... + 318501.

It is an arithmetic number, because the mean of its divisors is an integer number (1568450).

Almost surely, 2^63361998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63361998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84696300).

63361998 is an abundant number, since it is smaller than the sum of its proper divisors (106030602).

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

63361998 is a wasteful number, since it uses less digits than its factorization.

63361998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 230 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 63361998 is about 7960.0249999607. The cubic root of 63361998 is about 398.6663878043. Note that the first 3 decimals are identical.

The spelling of 63361998 in words is "sixty-three million, three hundred sixty-one thousand, nine hundred ninety-eight".