6667523 has 2 divisors, whose sum is σ = 6667524. Its totient is φ = 6667522.

The previous prime is 6667487. The next prime is 6667541. The reversal of 6667523 is 3257666.

6667523 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6667523 is a prime.

It is not a weakly prime, because it can be changed into another prime (6667223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3333761 + 3333762.

It is an arithmetic number, because the mean of its divisors is an integer number (3333762).

Almost surely, 2^6667523 is an apocalyptic number.

6667523 is a deficient number, since it is larger than the sum of its proper divisors (1).

6667523 is an equidigital number, since it uses as much as digits as its factorization.

6667523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 35.

The square root of 6667523 is about 2582.1547203837. The cubic root of 6667523 is about 188.2152638364.

The spelling of 6667523 in words is "six million, six hundred sixty-seven thousand, five hundred twenty-three".