63987572 has 24 divisors (see below), whose sum is σ = 126372960. Its totient is φ = 28081760.

The previous prime is 63987571. The next prime is 63987577. The reversal of 63987572 is 27578936.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63987571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23798 + ... + 26349.

It is an arithmetic number, because the mean of its divisors is an integer number (5265540).

Almost surely, 2^63987572 is an apocalyptic number.

It is an amenable number.

63987572 is a deficient number, since it is larger than the sum of its proper divisors (62385388).

63987572 is a wasteful number, since it uses less digits than its factorization.

63987572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50191 (or 50189 counting only the distinct ones).

The product of its digits is 635040, while the sum is 47.

The square root of 63987572 is about 7999.2232122876. The cubic root of 63987572 is about 399.9741066572.

The spelling of 63987572 in words is "sixty-three million, nine hundred eighty-seven thousand, five hundred seventy-two".