670730773 has 4 divisors (see below), whose sum is σ = 671487840. Its totient is φ = 669973708.

The previous prime is 670730759. The next prime is 670730779. The reversal of 670730773 is 377037076.

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 670730773 - 2¹³ = 670722581 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 (670730779) 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, 377203 + ... + 378976.

It is an arithmetic number, because the mean of its divisors is an integer number (167871960).

Almost surely, 2^670730773 is an apocalyptic number.

It is an amenable number.

670730773 is a deficient number, since it is larger than the sum of its proper divisors (757067).

670730773 is an equidigital number, since it uses as much as digits as its factorization.

670730773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757066.

The product of its (nonzero) digits is 129654, while the sum is 40.

The square root of 670730773 is about 25898.4704760725. The cubic root of 670730773 is about 875.3520316299.

The spelling of 670730773 in words is "six hundred seventy million, seven hundred thirty thousand, seven hundred seventy-three".