2668745 has 8 divisors (see below), whose sum is σ = 3390984. Its totient is φ = 2009344.

The previous prime is 2668733. The next prime is 2668769. The reversal of 2668745 is 5478662.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 466489 + 2202256 = 683^2 + 1484^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2668745 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2668699 and 2668708.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15614 + ... + 15783.

It is an arithmetic number, because the mean of its divisors is an integer number (423873).

2^2668745 is an apocalyptic number.

It is an amenable number.

2668745 is a deficient number, since it is larger than the sum of its proper divisors (722239).

2668745 is a wasteful number, since it uses less digits than its factorization.

2668745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31419.

The product of its digits is 80640, while the sum is 38.

The square root of 2668745 is about 1633.6293949363. The cubic root of 2668745 is about 138.7082714112.

The spelling of 2668745 in words is "two million, six hundred sixty-eight thousand, seven hundred forty-five".