63613494 has 48 divisors (see below), whose sum is σ = 158120352. Its totient is φ = 18105984.

The previous prime is 63613483. The next prime is 63613499. The reversal of 63613494 is 49431636.

63613494 is a `hidden beast` number, since 636 + 13 + 4 + 9 + 4 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63613499) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38632 + ... + 40244.

It is an arithmetic number, because the mean of its divisors is an integer number (3294174).

Almost surely, 2^63613494 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63613494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79060176).

63613494 is an abundant number, since it is smaller than the sum of its proper divisors (94506858).

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

63613494 is a wasteful number, since it uses less digits than its factorization.

63613494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1941 (or 1938 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 63613494 is about 7975.8067930461. The cubic root of 63613494 is about 399.1931527548.

The spelling of 63613494 in words is "sixty-three million, six hundred thirteen thousand, four hundred ninety-four".