641117699 has 2 divisors, whose sum is σ = 641117700. Its totient is φ = 641117698.

The previous prime is 641117693. The next prime is 641117713. The reversal of 641117699 is 996711146.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 641117699 - 2²⁰ = 640069123 is a prime.

It is a super-2 number, since 2×641117699² = 822063807942109202, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (641117693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320558849 + 320558850.

It is an arithmetic number, because the mean of its divisors is an integer number (320558850).

Almost surely, 2^641117699 is an apocalyptic number.

641117699 is a deficient number, since it is larger than the sum of its proper divisors (1).

641117699 is an equidigital number, since it uses as much as digits as its factorization.

641117699 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 44.

The square root of 641117699 is about 25320.3021111518. The cubic root of 641117699 is about 862.2752529025.

The spelling of 641117699 in words is "six hundred forty-one million, one hundred seventeen thousand, six hundred ninety-nine".