641469 has 8 divisors (see below), whose sum is σ = 878560. Its totient is φ = 416016.

The previous prime is 641467. The next prime is 641471. The reversal of 641469 is 964146.

It is an interprime number because it is at equal distance from previous prime (641467) and next prime (641471).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 641469 - 2¹ = 641467 is a prime.

It is a super-2 number, since 2×641469² = 822964955922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2779 + ... + 3000.

It is an arithmetic number, because the mean of its divisors is an integer number (109820).

2⁶⁴¹⁴⁶⁹ is an apocalyptic number.

It is an amenable number.

641469 is a deficient number, since it is larger than the sum of its proper divisors (237091).

641469 is a wasteful number, since it uses less digits than its factorization.

641469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5819.

The product of its digits is 5184, while the sum is 30.

The square root of 641469 is about 800.9175987578. The cubic root of 641469 is about 86.2432718969.

The spelling of 641469 in words is "six hundred forty-one thousand, four hundred sixty-nine".