2689490 has 16 divisors (see below), whose sum is σ = 4921560. Its totient is φ = 1057920.

The previous prime is 2689487. The next prime is 2689499. The reversal of 2689490 is 949862.

It can be written as a sum of positive squares in 4 ways, for example, as 737881 + 1951609 = 859^2 + 1397^2 .

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 7 ways as a sum of consecutive naturals, for example, 1595 + ... + 2814.

2^2689490 is an apocalyptic number.

2689490 is a deficient number, since it is larger than the sum of its proper divisors (2232070).

2689490 is a wasteful number, since it uses less digits than its factorization.

2689490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4477.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 2689490 is about 1639.9664630717. The cubic root of 2689490 is about 139.0667519215.

The spelling of 2689490 in words is "two million, six hundred eighty-nine thousand, four hundred ninety".