63706572 has 18 divisors (see below), whose sum is σ = 161036148. Its totient is φ = 21235512.

The previous prime is 63706571. The next prime is 63706609. The reversal of 63706572 is 27560736.

It is a happy number.

63706572 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1769627 = 63706572 / (6 + 3 + 7 + 0 + 6 + 5 + 7 + 2).

It is not an unprimeable number, because it can be changed into a prime (63706571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 884778 + ... + 884849.

Almost surely, 2^63706572 is an apocalyptic number.

It is an amenable number.

63706572 is an abundant number, since it is smaller than the sum of its proper divisors (97329576).

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

63706572 is a wasteful number, since it uses less digits than its factorization.

63706572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769637 (or 1769632 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 36.

The square root of 63706572 is about 7981.6396811683. The cubic root of 63706572 is about 399.3877550350.

The spelling of 63706572 in words is "sixty-three million, seven hundred six thousand, five hundred seventy-two".