63724923 has 6 divisors (see below), whose sum is σ = 92047124. Its totient is φ = 42483276.

The previous prime is 63724909. The next prime is 63724937. The reversal of 63724923 is 32942736.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (63724909) and next prime (63724937).

It is not a de Polignac number, because 63724923 - 2⁴ = 63724907 is a prime.

It is a super-2 number, since 2×63724923² = 8121731622711858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63724943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3540265 + ... + 3540282.

Almost surely, 2^63724923 is an apocalyptic number.

63724923 is a deficient number, since it is larger than the sum of its proper divisors (28322201).

63724923 is a wasteful number, since it uses less digits than its factorization.

63724923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7080553 (or 7080550 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 63724923 is about 7982.7891742172. The cubic root of 63724923 is about 399.4260999072.

The spelling of 63724923 in words is "sixty-three million, seven hundred twenty-four thousand, nine hundred twenty-three".