673703663 has 2 divisors, whose sum is σ = 673703664. Its totient is φ = 673703662.

The previous prime is 673703651. The next prime is 673703689. The reversal of 673703663 is 366307376.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 673703663 - 2⁴ = 673703647 is a prime.

It is equal to p_34960658 and since 673703663 and 34960658 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 673703663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (673733663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336851831 + 336851832.

It is an arithmetic number, because the mean of its divisors is an integer number (336851832).

Almost surely, 2^673703663 is an apocalyptic number.

673703663 is a deficient number, since it is larger than the sum of its proper divisors (1).

673703663 is an equidigital number, since it uses as much as digits as its factorization.

673703663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 285768, while the sum is 41.

The square root of 673703663 is about 25955.8021066582. The cubic root of 673703663 is about 876.6434041996.

The spelling of 673703663 in words is "six hundred seventy-three million, seven hundred three thousand, six hundred sixty-three".