2689493 has 4 divisors (see below), whose sum is σ = 2762220. Its totient is φ = 2616768.

The previous prime is 2689487. The next prime is 2689499. The reversal of 2689493 is 3949862.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (2689487) and next prime (2689499).

It can be written as a sum of positive squares in 2 ways, for example, as 1304164 + 1385329 = 1142^2 + 1177^2 .

It is a cyclic number.

It is not a de Polignac number, because 2689493 - 2¹⁸ = 2427349 is a prime.

It is a d-powerful number, because it can be written as 2¹⁷ + 6⁷ + 8⁷ + 9 + 4⁶ + 9² + 3¹¹ .

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 2689493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2689499) 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, 36308 + ... + 36381.

It is an arithmetic number, because the mean of its divisors is an integer number (690555).

2^2689493 is an apocalyptic number.

It is an amenable number.

2689493 is a deficient number, since it is larger than the sum of its proper divisors (72727).

2689493 is an equidigital number, since it uses as much as digits as its factorization.

2689493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72726.

The product of its digits is 93312, while the sum is 41.

The square root of 2689493 is about 1639.9673777243. The cubic root of 2689493 is about 139.0668036290.

The spelling of 2689493 in words is "two million, six hundred eighty-nine thousand, four hundred ninety-three".