2609963 has 2 divisors, whose sum is σ = 2609964. Its totient is φ = 2609962.

The previous prime is 2609953. The next prime is 2609989. The reversal of 2609963 is 3699062.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2609963 - 2⁴ = 2609947 is a prime.

It is a super-3 number, since 3×2609963³ = 53336474602857658041, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2609903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1304981 + 1304982.

It is an arithmetic number, because the mean of its divisors is an integer number (1304982).

2^2609963 is an apocalyptic number.

2609963 is a deficient number, since it is larger than the sum of its proper divisors (1).

2609963 is an equidigital number, since it uses as much as digits as its factorization.

2609963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 2609963 is about 1615.5379908872. The cubic root of 2609963 is about 137.6823014434.

It can be divided in two parts, 26099 and 63, that added together give a palindrome (26162).

The spelling of 2609963 in words is "two million, six hundred nine thousand, nine hundred sixty-three".