670256773 has 8 divisors (see below), whose sum is σ = 709912728. Its totient is φ = 630626304.

The previous prime is 670256767. The next prime is 670256803. The reversal of 670256773 is 377652076.

It can be written as a sum of positive squares in 4 ways, for example, as 291487329 + 378769444 = 17073^2 + 19462^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-670256773 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 (670256723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86965 + ... + 94357.

It is an arithmetic number, because the mean of its divisors is an integer number (88739091).

Almost surely, 2^670256773 is an apocalyptic number.

It is an amenable number.

670256773 is a deficient number, since it is larger than the sum of its proper divisors (39655955).

670256773 is a wasteful number, since it uses less digits than its factorization.

670256773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12743.

The product of its (nonzero) digits is 370440, while the sum is 43.

The square root of 670256773 is about 25889.3177391757. The cubic root of 670256773 is about 875.1457816423.

The spelling of 670256773 in words is "six hundred seventy million, two hundred fifty-six thousand, seven hundred seventy-three".