2690287 has 4 divisors (see below), whose sum is σ = 2807280. Its totient is φ = 2573296.

The previous prime is 2690263. The next prime is 2690293. The reversal of 2690287 is 7820962.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2690287 - 2¹¹ = 2688239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2690587) 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, 58462 + ... + 58507.

It is an arithmetic number, because the mean of its divisors is an integer number (701820).

2^2690287 is an apocalyptic number.

2690287 is a deficient number, since it is larger than the sum of its proper divisors (116993).

2690287 is a wasteful number, since it uses less digits than its factorization.

2690287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116992.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 2690287 is about 1640.2094378463. The cubic root of 2690287 is about 139.0804875188.

The spelling of 2690287 in words is "two million, six hundred ninety thousand, two hundred eighty-seven".