2751668 has 6 divisors (see below), whose sum is σ = 4815426. Its totient is φ = 1375832.

The previous prime is 2751667. The next prime is 2751677. The reversal of 2751668 is 8661572.

It can be written as a sum of positive squares in only one way, i.e., 2748964 + 2704 = 1658^2 + 52^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2751667) by changing a digit.

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 as a sum of consecutive naturals, namely, 343955 + ... + 343962.

It is an arithmetic number, because the mean of its divisors is an integer number (802571).

2^2751668 is an apocalyptic number.

It is an amenable number.

2751668 is a deficient number, since it is larger than the sum of its proper divisors (2063758).

2751668 is a wasteful number, since it uses less digits than its factorization.

2751668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687921 (or 687919 counting only the distinct ones).

The product of its digits is 20160, while the sum is 35.

The square root of 2751668 is about 1658.8152398625. The cubic root of 2751668 is about 140.1302868780.

The spelling of 2751668 in words is "two million, seven hundred fifty-one thousand, six hundred sixty-eight".