6690123 has 12 divisors (see below), whose sum is σ = 10542168. Its totient is φ = 4054560.

The previous prime is 6690119. The next prime is 6690143. The reversal of 6690123 is 3210966.

It is a happy number.

It is not a de Polignac number, because 6690123 - 2² = 6690119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6690143) 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, 33690 + ... + 33887.

It is an arithmetic number, because the mean of its divisors is an integer number (878514).

Almost surely, 2^6690123 is an apocalyptic number.

6690123 is a deficient number, since it is larger than the sum of its proper divisors (3852045).

6690123 is a wasteful number, since it uses less digits than its factorization.

6690123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67594 (or 67591 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 6690123 is about 2586.5272084399. The cubic root of 6690123 is about 188.4276799500.

The spelling of 6690123 in words is "six million, six hundred ninety thousand, one hundred twenty-three".