63976725 has 18 divisors (see below), whose sum is σ = 114589826. Its totient is φ = 34120800.

The previous prime is 63976723. The next prime is 63976741. The reversal of 63976725 is 52767936.

63976725 is a `hidden beast` number, since 639 + 7 + 6 + 7 + 2 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 1535121 + 62441604 = 1239^2 + 7902^2 .

It is not a de Polignac number, because 63976725 - 2¹ = 63976723 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63976723) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 141946 + ... + 142395.

Almost surely, 2^63976725 is an apocalyptic number.

It is an amenable number.

63976725 is a deficient number, since it is larger than the sum of its proper divisors (50613101).

63976725 is a wasteful number, since it uses less digits than its factorization.

63976725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284357 (or 284349 counting only the distinct ones).

The product of its digits is 476280, while the sum is 45.

The square root of 63976725 is about 7998.5451802187. The cubic root of 63976725 is about 399.9515045374.

The spelling of 63976725 in words is "sixty-three million, nine hundred seventy-six thousand, seven hundred twenty-five".