6662769 has 4 divisors (see below), whose sum is σ = 8883696. Its totient is φ = 4441844.

The previous prime is 6662753. The next prime is 6662771. The reversal of 6662769 is 9672666.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6662769 - 2⁴ = 6662753 is a prime.

It is a super-2 number, since 2×6662769² = 88784981494722, which contains 22 as substring.

It is a D-number.

It is a Curzon number.

6662769 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6662769.

It is not an unprimeable number, because it can be changed into a prime (6662069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1110459 + ... + 1110464.

It is an arithmetic number, because the mean of its divisors is an integer number (2220924).

Almost surely, 2^6662769 is an apocalyptic number.

It is an amenable number.

6662769 is a deficient number, since it is larger than the sum of its proper divisors (2220927).

6662769 is a wasteful number, since it uses less digits than its factorization.

6662769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2220926.

The product of its digits is 163296, while the sum is 42.

The square root of 6662769 is about 2581.2340072144. The cubic root of 6662769 is about 188.1705201782.

It can be divided in two parts, 66 and 62769, that added together give a triangular number (62835 = T₃₅₄).

The spelling of 6662769 in words is "six million, six hundred sixty-two thousand, seven hundred sixty-nine".