2768621 has 4 divisors (see below), whose sum is σ = 2772000. Its totient is φ = 2765244.

The previous prime is 2768611. The next prime is 2768627. The reversal of 2768621 is 1268672.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2768621 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2768627) 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, 410 + ... + 2388.

It is an arithmetic number, because the mean of its divisors is an integer number (693000).

2^2768621 is an apocalyptic number.

It is an amenable number.

2768621 is a deficient number, since it is larger than the sum of its proper divisors (3379).

2768621 is a wasteful number, since it uses less digits than its factorization.

2768621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3378.

The product of its digits is 8064, while the sum is 32.

The square root of 2768621 is about 1663.9173657367. The cubic root of 2768621 is about 140.4174783369.

The spelling of 2768621 in words is "two million, seven hundred sixty-eight thousand, six hundred twenty-one".