63054640 has 80 divisors (see below), whose sum is σ = 162132480. Its totient is φ = 22613760.

The previous prime is 63054619. The next prime is 63054659. The reversal of 63054640 is 4645036.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 63054599 and 63054608.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69067 + ... + 69973.

It is an arithmetic number, because the mean of its divisors is an integer number (2026656).

Almost surely, 2^63054640 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 63054640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81066240).

63054640 is an abundant number, since it is smaller than the sum of its proper divisors (99077840).

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

63054640 is a wasteful number, since it uses less digits than its factorization.

63054640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010 (or 1004 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 63054640 is about 7940.6951836725. The cubic root of 63054640 is about 398.0207223035.

Adding to 63054640 its reverse (4645036), we get a palindrome (67699676).

The spelling of 63054640 in words is "sixty-three million, fifty-four thousand, six hundred forty".