2668407 has 16 divisors (see below), whose sum is σ = 4089600. Its totient is φ = 1516032.

The previous prime is 2668399. The next prime is 2668411. The reversal of 2668407 is 7048662.

2668407 = 174² + 175² + ... + 236².

It is not a de Polignac number, because 2668407 - 2³ = 2668399 is a prime.

It is a d-powerful number, because it can be written as 2¹⁹ + 6 + 6⁶ + 8⁷ + 4⁴ + 0 + 7² .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2668427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5719 + ... + 6167.

It is an arithmetic number, because the mean of its divisors is an integer number (255600).

2^2668407 is an apocalyptic number.

2668407 is a deficient number, since it is larger than the sum of its proper divisors (1421193).

2668407 is a wasteful number, since it uses less digits than its factorization.

2668407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 2668407 is about 1633.5259410245. The cubic root of 2668407 is about 138.7024153034.

The spelling of 2668407 in words is "two million, six hundred sixty-eight thousand, four hundred seven".