2620668 has 12 divisors (see below), whose sum is σ = 6114920. Its totient is φ = 873552.

The previous prime is 2620663. The next prime is 2620741. The reversal of 2620668 is 8660262.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2620661) 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, 109183 + ... + 109206.

2^2620668 is an apocalyptic number.

It is an amenable number.

2620668 is an abundant number, since it is smaller than the sum of its proper divisors (3494252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2620668 is a wasteful number, since it uses less digits than its factorization.

2620668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218396 (or 218394 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 2620668 is about 1618.8477383621. The cubic root of 2620668 is about 137.8702834850.

The spelling of 2620668 in words is "two million, six hundred twenty thousand, six hundred sixty-eight".