63969198 has 32 divisors (see below), whose sum is σ = 138031776. Its totient is φ = 19688448.

The previous prime is 63969197. The next prime is 63969211. The reversal of 63969198 is 89196936.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 63969198.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63969197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 511 + ... + 11322.

It is an arithmetic number, because the mean of its divisors is an integer number (4313493).

Almost surely, 2^63969198 is an apocalyptic number.

63969198 is an abundant number, since it is smaller than the sum of its proper divisors (74062578).

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

63969198 is a wasteful number, since it uses less digits than its factorization.

63969198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11908.

The product of its digits is 629856, while the sum is 51.

The square root of 63969198 is about 7998.0746433126. The cubic root of 63969198 is about 399.9358188692.

The spelling of 63969198 in words is "sixty-three million, nine hundred sixty-nine thousand, one hundred ninety-eight".