63898812 has 54 divisors (see below), whose sum is σ = 166990824. Its totient is φ = 20601360.

The previous prime is 63898789. The next prime is 63898823. The reversal of 63898812 is 21889836.

63898812 is a `hidden beast` number, since 638 + 9 + 8 + 8 + 1 + 2 = 666.

It is a super-2 number, since 2×63898812² = 8166116350022688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 33673 + ... + 35519.

Almost surely, 2^63898812 is an apocalyptic number.

63898812 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63898812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83495412).

63898812 is an abundant number, since it is smaller than the sum of its proper divisors (103092012).

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

63898812 is a wasteful number, since it uses less digits than its factorization.

63898812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1919 (or 1883 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 63898812 is about 7993.6732482633. The cubic root of 63898812 is about 399.7890804686.

The spelling of 63898812 in words is "sixty-three million, eight hundred ninety-eight thousand, eight hundred twelve".