673400753 has 4 divisors (see below), whose sum is σ = 713012580. Its totient is φ = 633788928.

The previous prime is 673400737. The next prime is 673400773. The reversal of 673400753 is 357004376.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 574656784 + 98743969 = 23972^2 + 9937^2 .

It is a cyclic number.

It is not a de Polignac number, because 673400753 - 2⁴ = 673400737 is a prime.

It is a super-3 number, since 3×673400753³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (673400723) 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 3 ways as a sum of consecutive naturals, for example, 19805888 + ... + 19805921.

It is an arithmetic number, because the mean of its divisors is an integer number (178253145).

Almost surely, 2^673400753 is an apocalyptic number.

It is an amenable number.

673400753 is a deficient number, since it is larger than the sum of its proper divisors (39611827).

673400753 is a wasteful number, since it uses less digits than its factorization.

673400753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39611826.

The product of its (nonzero) digits is 52920, while the sum is 35.

The square root of 673400753 is about 25949.9663390918. The cubic root of 673400753 is about 876.5119993125.

The spelling of 673400753 in words is "six hundred seventy-three million, four hundred thousand, seven hundred fifty-three".