673943437 has 4 divisors (see below), whose sum is σ = 674104860. Its totient is φ = 673782016.

The previous prime is 673943423. The next prime is 673943477. The reversal of 673943437 is 734349376.

673943437 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 349727401 + 324216036 = 18701^2 + 18006^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-673943437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673943477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74278 + ... + 82855.

It is an arithmetic number, because the mean of its divisors is an integer number (168526215).

Almost surely, 2^673943437 is an apocalyptic number.

It is an amenable number.

673943437 is a deficient number, since it is larger than the sum of its proper divisors (161423).

673943437 is a wasteful number, since it uses less digits than its factorization.

673943437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161422.

The product of its digits is 1143072, while the sum is 46.

The square root of 673943437 is about 25960.4205859612. The cubic root of 673943437 is about 876.7473922364.

It can be divided in two parts, 6739 and 43437, that added together give a square (50176 = 224²).

The spelling of 673943437 in words is "six hundred seventy-three million, nine hundred forty-three thousand, four hundred thirty-seven".