673648817 has 32 divisors (see below), whose sum is σ = 775526400. Its totient is φ = 581391360.

The previous prime is 673648769. The next prime is 673648853. The reversal of 673648817 is 718846376.

It is not a de Polignac number, because 673648817 - 2¹² = 673644721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (673648867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1805843 + ... + 1806215.

It is an arithmetic number, because the mean of its divisors is an integer number (24235200).

Almost surely, 2^673648817 is an apocalyptic number.

It is an amenable number.

673648817 is a deficient number, since it is larger than the sum of its proper divisors (101877583).

673648817 is a wasteful number, since it uses less digits than its factorization.

673648817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593.

The product of its digits is 1354752, while the sum is 50.

The square root of 673648817 is about 25954.7455583753. The cubic root of 673648817 is about 876.6196144675.

The spelling of 673648817 in words is "six hundred seventy-three million, six hundred forty-eight thousand, eight hundred seventeen".