814711643 has 2 divisors, whose sum is σ = 814711644. Its totient is φ = 814711642.

The previous prime is 814711631. The next prime is 814711657. The reversal of 814711643 is 346117418.

It is a happy number.

814711643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 814711643 - 2¹² = 814707547 is a prime.

It is a super-2 number, since 2×814711643² = 1327510122479518898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (814711603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407355821 + 407355822.

It is an arithmetic number, because the mean of its divisors is an integer number (407355822).

Almost surely, 2^814711643 is an apocalyptic number.

814711643 is a deficient number, since it is larger than the sum of its proper divisors (1).

814711643 is an equidigital number, since it uses as much as digits as its factorization.

814711643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 35.

The square root of 814711643 is about 28543.1540478623. The cubic root of 814711643 is about 933.9736869886.

The spelling of 814711643 in words is "eight hundred fourteen million, seven hundred eleven thousand, six hundred forty-three".