2691329 has 2 divisors, whose sum is σ = 2691330. Its totient is φ = 2691328.

The previous prime is 2691317. The next prime is 2691373. The reversal of 2691329 is 9231962.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1817104 + 874225 = 1348^2 + 935^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2691329 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2691295 and 2691304.

It is not a weakly prime, because it can be changed into another prime (2690329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1345664 + 1345665.

It is an arithmetic number, because the mean of its divisors is an integer number (1345665).

2^2691329 is an apocalyptic number.

It is an amenable number.

2691329 is a deficient number, since it is larger than the sum of its proper divisors (1).

2691329 is an equidigital number, since it uses as much as digits as its factorization.

2691329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 32.

The square root of 2691329 is about 1640.5270494570. The cubic root of 2691329 is about 139.0984413854.

The spelling of 2691329 in words is "two million, six hundred ninety-one thousand, three hundred twenty-nine".