63998022 has 16 divisors (see below), whose sum is σ = 139632192. Its totient is φ = 19393320.

The previous prime is 63998009. The next prime is 63998027. The reversal of 63998022 is 22089936.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63998027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 484768 + ... + 484899.

It is an arithmetic number, because the mean of its divisors is an integer number (8727012).

Almost surely, 2^63998022 is an apocalyptic number.

63998022 is an abundant number, since it is smaller than the sum of its proper divisors (75634170).

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

63998022 is a wasteful number, since it uses less digits than its factorization.

63998022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969683.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 63998022 is about 7999.8763740448. The cubic root of 63998022 is about 399.9958791242.

The spelling of 63998022 in words is "sixty-three million, nine hundred ninety-eight thousand, twenty-two".