63985698 has 48 divisors (see below), whose sum is σ = 159382080. Its totient is φ = 18173088.

The previous prime is 63985661. The next prime is 63985699. The reversal of 63985698 is 89658936.

It is not an unprimeable number, because it can be changed into a prime (63985699) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21136 + ... + 23972.

It is an arithmetic number, because the mean of its divisors is an integer number (3320460).

Almost surely, 2^63985698 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63985698, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79691040).

63985698 is an abundant number, since it is smaller than the sum of its proper divisors (95396382).

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

63985698 is a wasteful number, since it uses less digits than its factorization.

63985698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3031 (or 3028 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The square root of 63985698 is about 7999.1060750561. The cubic root of 63985698 is about 399.9702019469.

The spelling of 63985698 in words is "sixty-three million, nine hundred eighty-five thousand, six hundred ninety-eight".