63724725 has 30 divisors (see below), whose sum is σ = 118043970. Its totient is φ = 33985440.

The previous prime is 63724691. The next prime is 63724729. The reversal of 63724725 is 52742736.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 3538161 + 60186564 = 1881^2 + 7758^2 .

It is not a de Polignac number, because 63724725 - 2⁷ = 63724597 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 63724725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63724729) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 13710 + ... + 17759.

It is an arithmetic number, because the mean of its divisors is an integer number (3934799).

Almost surely, 2^63724725 is an apocalyptic number.

It is an amenable number.

63724725 is a deficient number, since it is larger than the sum of its proper divisors (54319245).

63724725 is a wasteful number, since it uses less digits than its factorization.

63724725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31491 (or 31477 counting only the distinct ones).

The product of its digits is 70560, while the sum is 36.

The square root of 63724725 is about 7982.7767725272. The cubic root of 63724725 is about 399.4256862205.

The spelling of 63724725 in words is "sixty-three million, seven hundred twenty-four thousand, seven hundred twenty-five".