63748657 has 24 divisors (see below), whose sum is σ = 79387776. Its totient is φ = 50859648.

The previous prime is 63748651. The next prime is 63748681. The reversal of 63748657 is 75684736.

It is not a de Polignac number, because 63748657 - 2³ = 63748649 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63748651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85428 + ... + 86170.

It is an arithmetic number, because the mean of its divisors is an integer number (3307824).

Almost surely, 2^63748657 is an apocalyptic number.

It is an amenable number.

63748657 is a deficient number, since it is larger than the sum of its proper divisors (15639119).

63748657 is a wasteful number, since it uses less digits than its factorization.

63748657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877 (or 870 counting only the distinct ones).

The product of its digits is 846720, while the sum is 46.

The square root of 63748657 is about 7984.2756089704. The cubic root of 63748657 is about 399.4756817763.

It can be divided in two parts, 637 and 48657, that added together give a palindrome (49294).

The spelling of 63748657 in words is "sixty-three million, seven hundred forty-eight thousand, six hundred fifty-seven".