2690889 has 4 divisors (see below), whose sum is σ = 3587856. Its totient is φ = 1793924.

The previous prime is 2690887. The next prime is 2690911. The reversal of 2690889 is 9880962.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2690889 - 2¹ = 2690887 is a prime.

It is a super-2 number, since 2×2690889² = 14481767220642, which contains 22 as substring.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 2690889.

It is not an unprimeable number, because it can be changed into a prime (2690887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 448479 + ... + 448484.

It is an arithmetic number, because the mean of its divisors is an integer number (896964).

2^2690889 is an apocalyptic number.

It is an amenable number.

2690889 is a deficient number, since it is larger than the sum of its proper divisors (896967).

2690889 is an equidigital number, since it uses as much as digits as its factorization.

2690889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896966.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 2690889 is about 1640.3929407310. The cubic root of 2690889 is about 139.0908606635.

The spelling of 2690889 in words is "two million, six hundred ninety thousand, eight hundred eighty-nine".