6667487 has 2 divisors, whose sum is σ = 6667488. Its totient is φ = 6667486.

The previous prime is 6667481. The next prime is 6667523. The reversal of 6667487 is 7847666.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6667487 - 2⁴ = 6667471 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6667481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3333743 + 3333744.

It is an arithmetic number, because the mean of its divisors is an integer number (3333744).

Almost surely, 2^6667487 is an apocalyptic number.

6667487 is a deficient number, since it is larger than the sum of its proper divisors (1).

6667487 is an equidigital number, since it uses as much as digits as its factorization.

6667487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 44.

The square root of 6667487 is about 2582.1477494520. The cubic root of 6667487 is about 188.2149250918.

The spelling of 6667487 in words is "six million, six hundred sixty-seven thousand, four hundred eighty-seven".