6669079 has 4 divisors (see below), whose sum is σ = 6720120. Its totient is φ = 6618040.

The previous prime is 6669071. The next prime is 6669097. The reversal of 6669079 is 9709666.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9709666 = 2 ⋅4854833.

It is a cyclic number.

It is not a de Polignac number, because 6669079 - 2³ = 6669071 is a prime.

It is a super-2 number, since 2×6669079² = 88953229416482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6669071) 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, 25324 + ... + 25585.

It is an arithmetic number, because the mean of its divisors is an integer number (1680030).

Almost surely, 2^6669079 is an apocalyptic number.

6669079 is a deficient number, since it is larger than the sum of its proper divisors (51041).

6669079 is a wasteful number, since it uses less digits than its factorization.

6669079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51040.

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 6669079 is about 2582.4560015613. The cubic root of 6669079 is about 188.2299039644.

The spelling of 6669079 in words is "six million, six hundred sixty-nine thousand, seventy-nine".