673746463669 has 2 divisors, whose sum is σ = 673746463670. Its totient is φ = 673746463668.

The previous prime is 673746463601. The next prime is 673746463697. The reversal of 673746463669 is 966364647376.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 566650628644 + 107095835025 = 752762^2 + 327255^2 .

It is a cyclic number.

It is not a de Polignac number, because 673746463669 - 2¹⁵ = 673746430901 is a prime.

It is a super-2 number, since 2×673746463669² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (673746463069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336873231834 + 336873231835.

It is an arithmetic number, because the mean of its divisors is an integer number (336873231835).

Almost surely, 2^673746463669 is an apocalyptic number.

It is an amenable number.

673746463669 is a deficient number, since it is larger than the sum of its proper divisors (1).

673746463669 is an equidigital number, since it uses as much as digits as its factorization.

673746463669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 493807104, while the sum is 67.

The spelling of 673746463669 in words is "six hundred seventy-three billion, seven hundred forty-six million, four hundred sixty-three thousand, six hundred sixty-nine".