63489356 has 48 divisors (see below), whose sum is σ = 136152576. Its totient is φ = 25284864.

The previous prime is 63489353. The next prime is 63489359. The reversal of 63489356 is 65398436.

It is an interprime number because it is at equal distance from previous prime (63489353) and next prime (63489359).

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (63489353) 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, 38705 + ... + 40311.

It is an arithmetic number, because the mean of its divisors is an integer number (2836512).

Almost surely, 2^63489356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63489356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68076288).

63489356 is an abundant number, since it is smaller than the sum of its proper divisors (72663220).

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

63489356 is a wasteful number, since it uses less digits than its factorization.

63489356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1718 (or 1716 counting only the distinct ones).

The product of its digits is 466560, while the sum is 44.

The square root of 63489356 is about 7968.0208333061. The cubic root of 63489356 is about 398.9333163267.

The spelling of 63489356 in words is "sixty-three million, four hundred eighty-nine thousand, three hundred fifty-six".