2263691 has 2 divisors, whose sum is σ = 2263692. Its totient is φ = 2263690.

The previous prime is 2263687. The next prime is 2263699. The reversal of 2263691 is 1963622.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2263691 - 2² = 2263687 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 2⁹ + 2¹⁹ + 6³ + 3¹⁰ + 6⁸ + 9 + 1 .

It is not a weakly prime, because it can be changed into another prime (2263699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1131845 + 1131846.

It is an arithmetic number, because the mean of its divisors is an integer number (1131846).

2^2263691 is an apocalyptic number.

2263691 is a deficient number, since it is larger than the sum of its proper divisors (1).

2263691 is an equidigital number, since it uses as much as digits as its factorization.

2263691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 29.

The square root of 2263691 is about 1504.5567453572. The cubic root of 2263691 is about 131.3023144440.

The spelling of 2263691 in words is "two million, two hundred sixty-three thousand, six hundred ninety-one".