63745623 has 10 divisors (see below), whose sum is σ = 95225064. Its totient is φ = 42497028.

The previous prime is 63745621. The next prime is 63745637. The reversal of 63745623 is 32654736.

It is not a de Polignac number, because 63745623 - 2¹ = 63745621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63745621) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 393411 + ... + 393572.

Almost surely, 2^63745623 is an apocalyptic number.

63745623 is a deficient number, since it is larger than the sum of its proper divisors (31479441).

63745623 is an equidigital number, since it uses as much as digits as its factorization.

63745623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786995 (or 786986 counting only the distinct ones).

The product of its digits is 90720, while the sum is 36.

The square root of 63745623 is about 7984.0856082585. The cubic root of 63745623 is about 399.4693442391.

The spelling of 63745623 in words is "sixty-three million, seven hundred forty-five thousand, six hundred twenty-three".