63729023 has 2 divisors, whose sum is σ = 63729024. Its totient is φ = 63729022.

The previous prime is 63729019. The next prime is 63729031. The reversal of 63729023 is 32092736.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63729023 - 2² = 63729019 is a prime.

It is a super-2 number, since 2×63729023² = 8122776745069058, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63729013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31864511 + 31864512.

It is an arithmetic number, because the mean of its divisors is an integer number (31864512).

Almost surely, 2^63729023 is an apocalyptic number.

63729023 is a deficient number, since it is larger than the sum of its proper divisors (1).

63729023 is an equidigital number, since it uses as much as digits as its factorization.

63729023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 63729023 is about 7983.0459725596. The cubic root of 63729023 is about 399.4346659533.

The spelling of 63729023 in words is "sixty-three million, seven hundred twenty-nine thousand, twenty-three".