63681037 has 32 divisors (see below), whose sum is σ = 78796800. Its totient is φ = 51367680.

The previous prime is 63681029. The next prime is 63681041. The reversal of 63681037 is 73018636.

It is not a de Polignac number, because 63681037 - 2³ = 63681029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63680993 and 63681011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63681047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 563493 + ... + 563605.

It is an arithmetic number, because the mean of its divisors is an integer number (2462400).

Almost surely, 2^63681037 is an apocalyptic number.

It is an amenable number.

63681037 is a deficient number, since it is larger than the sum of its proper divisors (15115763).

63681037 is a wasteful number, since it uses less digits than its factorization.

63681037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 63681037 is about 7980.0399121809. The cubic root of 63681037 is about 399.3343867619.

The spelling of 63681037 in words is "sixty-three million, six hundred eighty-one thousand, thirty-seven".