641299 has 2 divisors, whose sum is σ = 641300. Its totient is φ = 641298.

The previous prime is 641287. The next prime is 641317. The reversal of 641299 is 992146.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 641299 - 2¹⁷ = 510227 is a prime.

It is a super-2 number, since 2×641299² = 822528814802, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 641299.

It is not a weakly prime, because it can be changed into another prime (641239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320649 + 320650.

It is an arithmetic number, because the mean of its divisors is an integer number (320650).

2⁶⁴¹²⁹⁹ is an apocalyptic number.

641299 is a deficient number, since it is larger than the sum of its proper divisors (1).

641299 is an equidigital number, since it uses as much as digits as its factorization.

641299 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 31.

The square root of 641299 is about 800.8114634544. The cubic root of 641299 is about 86.2356525879.

The spelling of 641299 in words is "six hundred forty-one thousand, two hundred ninety-nine".