2688622 has 4 divisors (see below), whose sum is σ = 4032936. Its totient is φ = 1344310.

The previous prime is 2688617. The next prime is 2688629. The reversal of 2688622 is 2268862.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2688629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672154 + ... + 672157.

It is an arithmetic number, because the mean of its divisors is an integer number (1008234).

2^2688622 is an apocalyptic number.

2688622 is a deficient number, since it is larger than the sum of its proper divisors (1344314).

2688622 is a wasteful number, since it uses less digits than its factorization.

2688622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344313.

The product of its digits is 18432, while the sum is 34.

The square root of 2688622 is about 1639.7018021579. The cubic root of 2688622 is about 139.0517896140.

The spelling of 2688622 in words is "two million, six hundred eighty-eight thousand, six hundred twenty-two".