2690813 has 6 divisors (see below), whose sum is σ = 2740734. Its totient is φ = 2641784.

The previous prime is 2690803. The next prime is 2690827. The reversal of 2690813 is 3180962.

It can be written as a sum of positive squares in only one way, i.e., 1684804 + 1006009 = 1298^2 + 1003^2 .

It is not a de Polignac number, because 2690813 - 2⁸ = 2690557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2690803) 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 in 5 ways as a sum of consecutive naturals, for example, 3095 + ... + 3867.

It is an arithmetic number, because the mean of its divisors is an integer number (456789).

2^2690813 is an apocalyptic number.

It is an amenable number.

2690813 is a deficient number, since it is larger than the sum of its proper divisors (49921).

2690813 is an frugal number, since it uses more digits than its factorization.

2690813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891 (or 832 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 2690813 is about 1640.3697753860. The cubic root of 2690813 is about 139.0895511824.

The spelling of 2690813 in words is "two million, six hundred ninety thousand, eight hundred thirteen".