646262159 has 2 divisors, whose sum is σ = 646262160. Its totient is φ = 646262158.

The previous prime is 646262117. The next prime is 646262161. The reversal of 646262159 is 951262646.

It is a happy number.

646262159 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 646262159 - 2²⁴ = 629484943 is a prime.

Together with 646262161, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (646262359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323131079 + 323131080.

It is an arithmetic number, because the mean of its divisors is an integer number (323131080).

Almost surely, 2^646262159 is an apocalyptic number.

646262159 is a deficient number, since it is larger than the sum of its proper divisors (1).

646262159 is an equidigital number, since it uses as much as digits as its factorization.

646262159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 41.

The square root of 646262159 is about 25421.6867851054. The cubic root of 646262159 is about 864.5754692279.

The spelling of 646262159 in words is "six hundred forty-six million, two hundred sixty-two thousand, one hundred fifty-nine".