63504540 has 96 divisors (see below), whose sum is σ = 215550720. Its totient is φ = 15393600.

The previous prime is 63504521. The next prime is 63504559. The reversal of 63504540 is 4540536.

It is an interprime number because it is at equal distance from previous prime (63504521) and next prime (63504559).

It is a super-2 number, since 2×63504540² = 8065653201223200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 595 + ... + 11285.

It is an arithmetic number, because the mean of its divisors is an integer number (2245320).

Almost surely, 2^63504540 is an apocalyptic number.

63504540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63504540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107775360).

63504540 is an abundant number, since it is smaller than the sum of its proper divisors (152046180).

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

63504540 is a wasteful number, since it uses less digits than its factorization.

63504540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10720 (or 10712 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 63504540 is about 7968.9735850986. The cubic root of 63504540 is about 398.9651165162.

The spelling of 63504540 in words is "sixty-three million, five hundred four thousand, five hundred forty".