673747667 has 2 divisors, whose sum is σ = 673747668. Its totient is φ = 673747666.

The previous prime is 673747663. The next prime is 673747699. The reversal of 673747667 is 766747376.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 673747667 - 2² = 673747663 is a prime.

It is not a weakly prime, because it can be changed into another prime (673747661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336873833 + 336873834.

It is an arithmetic number, because the mean of its divisors is an integer number (336873834).

Almost surely, 2^673747667 is an apocalyptic number.

673747667 is a deficient number, since it is larger than the sum of its proper divisors (1).

673747667 is an equidigital number, since it uses as much as digits as its factorization.

673747667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6223392, while the sum is 53.

The square root of 673747667 is about 25956.6497645594. The cubic root of 673747667 is about 876.6624902254.

The spelling of 673747667 in words is "six hundred seventy-three million, seven hundred forty-seven thousand, six hundred sixty-seven".