63745139 has 2 divisors, whose sum is σ = 63745140. Its totient is φ = 63745138.

The previous prime is 63745111. The next prime is 63745159. The reversal of 63745139 is 93154736.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63745139 - 2²⁰ = 62696563 is a prime.

It is a super-2 number, since 2×63745139² = 8126885492258642, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (63745159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31872569 + 31872570.

It is an arithmetic number, because the mean of its divisors is an integer number (31872570).

Almost surely, 2^63745139 is an apocalyptic number.

63745139 is a deficient number, since it is larger than the sum of its proper divisors (1).

63745139 is an equidigital number, since it uses as much as digits as its factorization.

63745139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 38.

The square root of 63745139 is about 7984.0552979047. The cubic root of 63745139 is about 399.4683332225.

The spelling of 63745139 in words is "sixty-three million, seven hundred forty-five thousand, one hundred thirty-nine".