6516667 has 2 divisors, whose sum is σ = 6516668. Its totient is φ = 6516666.

The previous prime is 6516649. The next prime is 6516673. The reversal of 6516667 is 7666156.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6516667 - 2⁷ = 6516539 is a prime.

6516667 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (6516617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3258333 + 3258334.

It is an arithmetic number, because the mean of its divisors is an integer number (3258334).

Almost surely, 2^6516667 is an apocalyptic number.

6516667 is a deficient number, since it is larger than the sum of its proper divisors (1).

6516667 is an equidigital number, since it uses as much as digits as its factorization.

6516667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 37.

The square root of 6516667 is about 2552.7763317612. The cubic root of 6516667 is about 186.7849339108.

The spelling of 6516667 in words is "six million, five hundred sixteen thousand, six hundred sixty-seven".