6669078 has 24 divisors (see below), whose sum is σ = 14445288. Its totient is φ = 2051712.

The previous prime is 6669071. The next prime is 6669097. The reversal of 6669078 is 8709666.

It is a happy number.

It is an Ulam 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 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, 2275 + ... + 4302.

It is an arithmetic number, because the mean of its divisors is an integer number (601887).

Almost surely, 2^6669078 is an apocalyptic number.

6669078 is an abundant number, since it is smaller than the sum of its proper divisors (7776210).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6669078 is a wasteful number, since it uses less digits than its factorization.

6669078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6608 (or 6595 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 6669078 is about 2582.4558079472. The cubic root of 6669078 is about 188.2298945564.

The spelling of 6669078 in words is "six million, six hundred sixty-nine thousand, seventy-eight".