63747923 has 4 divisors (see below), whose sum is σ = 64950768. Its totient is φ = 62545080.

The previous prime is 63747913. The next prime is 63747961. The reversal of 63747923 is 32974736.

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

It is a cyclic number.

It is not a de Polignac number, because 63747923 - 2¹⁶ = 63682387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63747913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 601343 + ... + 601448.

It is an arithmetic number, because the mean of its divisors is an integer number (16237692).

Almost surely, 2^63747923 is an apocalyptic number.

63747923 is a deficient number, since it is larger than the sum of its proper divisors (1202845).

63747923 is a wasteful number, since it uses less digits than its factorization.

63747923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202844.

The product of its digits is 190512, while the sum is 41.

The square root of 63747923 is about 7984.2296434910. The cubic root of 63747923 is about 399.4741485870.

The spelling of 63747923 in words is "sixty-three million, seven hundred forty-seven thousand, nine hundred twenty-three".