2668945 has 16 divisors (see below), whose sum is σ = 3368448. Its totient is φ = 2027520.

The previous prime is 2668931. The next prime is 2668993. The reversal of 2668945 is 5498662.

It is a happy number.

It is not a de Polignac number, because 2668945 - 2⁹ = 2668433 is a prime.

It is an Ulam number.

It is a Duffinian number.

Its product of digits (103680) is a multiple of the sum of its prime divisors (360).

2668945 is a lucky number.

It is a nialpdrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 2668898 and 2668907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10257 + ... + 10513.

It is an arithmetic number, because the mean of its divisors is an integer number (210528).

2^2668945 is an apocalyptic number.

It is an amenable number.

2668945 is a deficient number, since it is larger than the sum of its proper divisors (699503).

2668945 is a wasteful number, since it uses less digits than its factorization.

2668945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360.

The product of its digits is 103680, while the sum is 40.

The square root of 2668945 is about 1633.6906071836. The cubic root of 2668945 is about 138.7117363309.

The spelling of 2668945 in words is "two million, six hundred sixty-eight thousand, nine hundred forty-five".