63630440 has 32 divisors (see below), whose sum is σ = 143397000. Its totient is φ = 25411584.

The previous prime is 63630419. The next prime is 63630451. The reversal of 63630440 is 4403636.

It can be written as a sum of positive squares in 4 ways, for example, as 16048036 + 47582404 = 4006^2 + 6898^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44456 + ... + 45864.

Almost surely, 2^63630440 is an apocalyptic number.

It is an amenable number.

63630440 is an abundant number, since it is smaller than the sum of its proper divisors (79766560).

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

63630440 is a wasteful number, since it uses less digits than its factorization.

63630440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2549 (or 2545 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 63630440 is about 7976.8690599758. The cubic root of 63630440 is about 399.2285966318.

The spelling of 63630440 in words is "sixty-three million, six hundred thirty thousand, four hundred forty".