673506413 has 2 divisors, whose sum is σ = 673506414. Its totient is φ = 673506412.

The previous prime is 673506409. The next prime is 673506439. The reversal of 673506413 is 314605376.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 362407369 + 311099044 = 19037^2 + 17638^2 .

It is a cyclic number.

It is not a de Polignac number, because 673506413 - 2² = 673506409 is a prime.

It is a super-2 number, since 2×673506413² = 907221776704253138, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (673506913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336753206 + 336753207.

It is an arithmetic number, because the mean of its divisors is an integer number (336753207).

Almost surely, 2^673506413 is an apocalyptic number.

It is an amenable number.

673506413 is a deficient number, since it is larger than the sum of its proper divisors (1).

673506413 is an equidigital number, since it uses as much as digits as its factorization.

673506413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 673506413 is about 25952.0021000307. The cubic root of 673506413 is about 876.5578399772.

The spelling of 673506413 in words is "six hundred seventy-three million, five hundred six thousand, four hundred thirteen".