2920691 has 2 divisors, whose sum is σ = 2920692. Its totient is φ = 2920690.

The previous prime is 2920649. The next prime is 2920693. The reversal of 2920691 is 1960292.

2920691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2920691 - 2¹⁰ = 2919667 is a prime.

Together with 2920693, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2920693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1460345 + 1460346.

It is an arithmetic number, because the mean of its divisors is an integer number (1460346).

2^2920691 is an apocalyptic number.

2920691 is a deficient number, since it is larger than the sum of its proper divisors (1).

2920691 is an equidigital number, since it uses as much as digits as its factorization.

2920691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 2920691 is about 1709.0029256850. The cubic root of 2920691 is about 142.9426636978.

The spelling of 2920691 in words is "two million, nine hundred twenty thousand, six hundred ninety-one".