63613040 has 40 divisors (see below), whose sum is σ = 148249440. Its totient is φ = 25385216.

The previous prime is 63613021. The next prime is 63613049. The reversal of 63613040 is 4031636.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 63612997 and 63613015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63613049) 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, 51146 + ... + 52374.

It is an arithmetic number, because the mean of its divisors is an integer number (3706236).

Almost surely, 2^63613040 is an apocalyptic number.

It is an amenable number.

63613040 is an abundant number, since it is smaller than the sum of its proper divisors (84636400).

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

63613040 is a wasteful number, since it uses less digits than its factorization.

63613040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1889 (or 1883 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 63613040 is about 7975.7783319247. The cubic root of 63613040 is about 399.1922030919.

Adding to 63613040 its reverse (4031636), we get a palindrome (67644676).

The spelling of 63613040 in words is "sixty-three million, six hundred thirteen thousand, forty".