2738689 has 4 divisors (see below), whose sum is σ = 2749140. Its totient is φ = 2728240.

The previous prime is 2738657. The next prime is 2738707. The reversal of 2738689 is 9868372.

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

It can be written as a sum of positive squares in 2 ways, for example, as 801025 + 1937664 = 895^2 + 1392^2 .

It is a cyclic number.

It is not a de Polignac number, because 2738689 - 2⁵ = 2738657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2738639) 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, 4822 + ... + 5359.

It is an arithmetic number, because the mean of its divisors is an integer number (687285).

2^2738689 is an apocalyptic number.

It is an amenable number.

2738689 is a deficient number, since it is larger than the sum of its proper divisors (10451).

2738689 is a wasteful number, since it uses less digits than its factorization.

2738689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10450.

The product of its digits is 145152, while the sum is 43.

The square root of 2738689 is about 1654.8984863127. The cubic root of 2738689 is about 139.9096185347.

The spelling of 2738689 in words is "two million, seven hundred thirty-eight thousand, six hundred eighty-nine".