2611669 has 2 divisors, whose sum is σ = 2611670. Its totient is φ = 2611668.

The previous prime is 2611667. The next prime is 2611699. The reversal of 2611669 is 9661162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2480625 + 131044 = 1575^2 + 362^2 .

It is a cyclic number.

It is not a de Polignac number, because 2611669 - 2¹ = 2611667 is a prime.

It is a super-2 number, since 2×2611669² = 13641629931122, which contains 22 as substring.

Together with 2611667, it forms a pair of twin primes.

2611669 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2611669.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2611663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1305834 + 1305835.

It is an arithmetic number, because the mean of its divisors is an integer number (1305835).

2^2611669 is an apocalyptic number.

It is an amenable number.

2611669 is a deficient number, since it is larger than the sum of its proper divisors (1).

2611669 is an equidigital number, since it uses as much as digits as its factorization.

2611669 is an evil number, because the sum of its binary digits is even.

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

The square root of 2611669 is about 1616.0659021216. The cubic root of 2611669 is about 137.7122935476.

The spelling of 2611669 in words is "two million, six hundred eleven thousand, six hundred sixty-nine".