673531215 has 48 divisors (see below), whose sum is σ = 1270866528. Its totient is φ = 303657984.

The previous prime is 673531213. The next prime is 673531219. The reversal of 673531215 is 512135376.

It is not a de Polignac number, because 673531215 - 2¹ = 673531213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673531213) 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 in 47 ways as a sum of consecutive naturals, for example, 47379 + ... + 59931.

It is an arithmetic number, because the mean of its divisors is an integer number (26476386).

Almost surely, 2^673531215 is an apocalyptic number.

673531215 is a deficient number, since it is larger than the sum of its proper divisors (597335313).

673531215 is a wasteful number, since it uses less digits than its factorization.

673531215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12648 (or 12641 counting only the distinct ones).

The product of its digits is 18900, while the sum is 33.

The square root of 673531215 is about 25952.4799393045. The cubic root of 673531215 is about 876.5685996474.

It can be divided in two parts, 6735 and 31215, that added together give a triangular number (37950 = T₂₇₅).

The spelling of 673531215 in words is "six hundred seventy-three million, five hundred thirty-one thousand, two hundred fifteen".