6742665 has 12 divisors (see below), whose sum is σ = 11687364. Its totient is φ = 3596064.

The previous prime is 6742651. The next prime is 6742691. The reversal of 6742665 is 5662476.

It can be written as a sum of positive squares in 2 ways, for example, as 4968441 + 1774224 = 2229^2 + 1332^2 .

It is not a de Polignac number, because 6742665 - 2⁴ = 6742649 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74874 + ... + 74963.

It is an arithmetic number, because the mean of its divisors is an integer number (973947).

Almost surely, 2^6742665 is an apocalyptic number.

It is an amenable number.

6742665 is a deficient number, since it is larger than the sum of its proper divisors (4944699).

6742665 is a wasteful number, since it uses less digits than its factorization.

6742665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149848 (or 149845 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 6742665 is about 2596.6642062462. The cubic root of 6742665 is about 188.9196769627.

The spelling of 6742665 in words is "six million, seven hundred forty-two thousand, six hundred sixty-five".