63712291 has 2 divisors, whose sum is σ = 63712292. Its totient is φ = 63712290.

The previous prime is 63712279. The next prime is 63712349. The reversal of 63712291 is 19221736.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63712291 - 2¹⁹ = 63188003 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (63712591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31856145 + 31856146.

It is an arithmetic number, because the mean of its divisors is an integer number (31856146).

Almost surely, 2^63712291 is an apocalyptic number.

63712291 is a deficient number, since it is larger than the sum of its proper divisors (1).

63712291 is an equidigital number, since it uses as much as digits as its factorization.

63712291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 31.

The square root of 63712291 is about 7981.9979328486. The cubic root of 63712291 is about 399.3997058179.

The spelling of 63712291 in words is "sixty-three million, seven hundred twelve thousand, two hundred ninety-one".