2567668 has 12 divisors (see below), whose sum is σ = 4638592. Its totient is φ = 1242360.

The previous prime is 2567647. The next prime is 2567671. The reversal of 2567668 is 8667652.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 2567668.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10230 + ... + 10477.

2^2567668 is an apocalyptic number.

It is an amenable number.

2567668 is a deficient number, since it is larger than the sum of its proper divisors (2070924).

2567668 is a wasteful number, since it uses less digits than its factorization.

2567668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20742 (or 20740 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The square root of 2567668 is about 1602.3944583029. The cubic root of 2567668 is about 136.9345239184.

The spelling of 2567668 in words is "two million, five hundred sixty-seven thousand, six hundred sixty-eight".