2641669 has 2 divisors, whose sum is σ = 2641670. Its totient is φ = 2641668.

The previous prime is 2641663. The next prime is 2641687. The reversal of 2641669 is 9661462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2528100 + 113569 = 1590^2 + 337^2 .

It is a cyclic number.

It is not a de Polignac number, because 2641669 - 2⁵ = 2641637 is a prime.

It is a super-2 number, since 2×2641669² = 13956830211122, which contains 22 as substring.

2641669 is a lucky number.

It is equal to p₁₉₂₆₈₈ and since 2641669 and 192688 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2641663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1320834 + 1320835.

It is an arithmetic number, because the mean of its divisors is an integer number (1320835).

2^2641669 is an apocalyptic number.

It is an amenable number.

2641669 is a deficient number, since it is larger than the sum of its proper divisors (1).

2641669 is an equidigital number, since it uses as much as digits as its factorization.

2641669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 34.

The square root of 2641669 is about 1625.3211990250. The cubic root of 2641669 is about 138.2375834556.

The spelling of 2641669 in words is "two million, six hundred forty-one thousand, six hundred sixty-nine".