63748745 has 4 divisors (see below), whose sum is σ = 76498500. Its totient is φ = 50998992.

The previous prime is 63748739. The next prime is 63748753. The reversal of 63748745 is 54784736.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23464336 + 40284409 = 4844^2 + 6347^2 .

It is a cyclic number.

It is not a de Polignac number, because 63748745 - 2⁶ = 63748681 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63748696 and 63748705.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6374870 + ... + 6374879.

It is an arithmetic number, because the mean of its divisors is an integer number (19124625).

Almost surely, 2^63748745 is an apocalyptic number.

It is an amenable number.

63748745 is a deficient number, since it is larger than the sum of its proper divisors (12749755).

63748745 is a wasteful number, since it uses less digits than its factorization.

63748745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12749754.

The product of its digits is 564480, while the sum is 44.

The square root of 63748745 is about 7984.2811198003. The cubic root of 63748745 is about 399.4758655911.

The spelling of 63748745 in words is "sixty-three million, seven hundred forty-eight thousand, seven hundred forty-five".