673071257 has 4 divisors (see below), whose sum is σ = 708496080. Its totient is φ = 637646436.

The previous prime is 673071253. The next prime is 673071271. The reversal of 673071257 is 752170376.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 673071257 - 2² = 673071253 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 673071257.

It is not an unprimeable number, because it can be changed into a prime (673071251) 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 3 ways as a sum of consecutive naturals, for example, 17712383 + ... + 17712420.

It is an arithmetic number, because the mean of its divisors is an integer number (177124020).

Almost surely, 2^673071257 is an apocalyptic number.

It is an amenable number.

673071257 is a deficient number, since it is larger than the sum of its proper divisors (35424823).

673071257 is a wasteful number, since it uses less digits than its factorization.

673071257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35424822.

The product of its (nonzero) digits is 61740, while the sum is 38.

The square root of 673071257 is about 25943.6168835419. The cubic root of 673071257 is about 876.3690164434.

The spelling of 673071257 in words is "six hundred seventy-three million, seventy-one thousand, two hundred fifty-seven".