6690767 has 2 divisors, whose sum is σ = 6690768. Its totient is φ = 6690766.

The previous prime is 6690743. The next prime is 6690787. The reversal of 6690767 is 7670966.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6690767 - 2⁶ = 6690703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6690737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3345383 + 3345384.

It is an arithmetic number, because the mean of its divisors is an integer number (3345384).

Almost surely, 2^6690767 is an apocalyptic number.

6690767 is a deficient number, since it is larger than the sum of its proper divisors (1).

6690767 is an equidigital number, since it uses as much as digits as its factorization.

6690767 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 6690767 is about 2586.6516966921. The cubic root of 6690767 is about 188.4337258544.

The spelling of 6690767 in words is "six million, six hundred ninety thousand, seven hundred sixty-seven".