63757540 has 96 divisors (see below), whose sum is σ = 175795200. Its totient is φ = 18817920.

The previous prime is 63757537. The next prime is 63757567. The reversal of 63757540 is 4575736.

It is a self number, because there is not a number n which added to its sum of digits gives 63757540.

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, 28171 + ... + 30349.

It is an arithmetic number, because the mean of its divisors is an integer number (1831200).

Almost surely, 2^63757540 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 63757540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87897600).

63757540 is an abundant number, since it is smaller than the sum of its proper divisors (112037660).

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

63757540 is a wasteful number, since it uses less digits than its factorization.

63757540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2225 (or 2223 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 37.

The square root of 63757540 is about 7984.8318704904. The cubic root of 63757540 is about 399.4942357759.

The spelling of 63757540 in words is "sixty-three million, seven hundred fifty-seven thousand, five hundred forty".