2689646 has 4 divisors (see below), whose sum is σ = 4034472. Its totient is φ = 1344822.

The previous prime is 2689637. The next prime is 2689649. The reversal of 2689646 is 6469862.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2689649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672410 + ... + 672413.

It is an arithmetic number, because the mean of its divisors is an integer number (1008618).

2^2689646 is an apocalyptic number.

2689646 is a deficient number, since it is larger than the sum of its proper divisors (1344826).

2689646 is a wasteful number, since it uses less digits than its factorization.

2689646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344825.

The product of its digits is 124416, while the sum is 41.

The square root of 2689646 is about 1640.0140243303. The cubic root of 2689646 is about 139.0694406585.

The spelling of 2689646 in words is "two million, six hundred eighty-nine thousand, six hundred forty-six".