63509898 has 8 divisors (see below), whose sum is σ = 127019808. Its totient is φ = 21169964.

The previous prime is 63509881. The next prime is 63509921. The reversal of 63509898 is 89890536.

It is a sphenic number, since it is the product of 3 distinct primes.

63509898 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5292486 + ... + 5292497.

It is an arithmetic number, because the mean of its divisors is an integer number (15877476).

Almost surely, 2^63509898 is an apocalyptic number.

63509898 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

63509898 is a wasteful number, since it uses less digits than its factorization.

63509898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10584988.

The product of its (nonzero) digits is 466560, while the sum is 48.

The square root of 63509898 is about 7969.3097568108. The cubic root of 63509898 is about 398.9763366850.

The spelling of 63509898 in words is "sixty-three million, five hundred nine thousand, eight hundred ninety-eight".