63198906 has 16 divisors (see below), whose sum is σ = 129337824. Its totient is φ = 20576304.

The previous prime is 63198899. The next prime is 63198907. The reversal of 63198906 is 60989136.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63198907) 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, 122221 + ... + 122736.

It is an arithmetic number, because the mean of its divisors is an integer number (8083614).

Almost surely, 2^63198906 is an apocalyptic number.

63198906 is an abundant number, since it is smaller than the sum of its proper divisors (66138918).

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

63198906 is a wasteful number, since it uses less digits than its factorization.

63198906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245005.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 63198906 is about 7949.7739590507. The cubic root of 63198906 is about 398.3240418849.

It can be divided in two parts, 6319 and 8906, that added together give a triangular number (15225 = T₁₇₄).

The spelling of 63198906 in words is "sixty-three million, one hundred ninety-eight thousand, nine hundred six".