2689018 has 4 divisors (see below), whose sum is σ = 4033530. Its totient is φ = 1344508.

The previous prime is 2689007. The next prime is 2689019. The reversal of 2689018 is 8109862.

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

It can be written as a sum of positive squares in only one way, i.e., 1734489 + 954529 = 1317^2 + 977^2 .

It is not an unprimeable number, because it can be changed into a prime (2689019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672253 + ... + 672256.

2^2689018 is an apocalyptic number.

2689018 is a deficient number, since it is larger than the sum of its proper divisors (1344512).

2689018 is a wasteful number, since it uses less digits than its factorization.

2689018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344511.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 2689018 is about 1639.8225513756. The cubic root of 2689018 is about 139.0586161353.

The spelling of 2689018 in words is "two million, six hundred eighty-nine thousand, eighteen".