63613564 has 36 divisors (see below), whose sum is σ = 131717880. Its totient is φ = 26796000.

The previous prime is 63613547. The next prime is 63613567. The reversal of 63613564 is 46531636.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63613567) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8814 + ... + 14314.

It is an arithmetic number, because the mean of its divisors is an integer number (3658830).

Almost surely, 2^63613564 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 63613564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65858940).

63613564 is an abundant number, since it is smaller than the sum of its proper divisors (68104316).

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

63613564 is a wasteful number, since it uses less digits than its factorization.

63613564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5578 (or 5569 counting only the distinct ones).

The product of its digits is 38880, while the sum is 34.

The square root of 63613564 is about 7975.8111813157. The cubic root of 63613564 is about 399.1932991782.

The spelling of 63613564 in words is "sixty-three million, six hundred thirteen thousand, five hundred sixty-four".