670313785 has 16 divisors (see below), whose sum is σ = 812794752. Its totient is φ = 530668800.

The previous prime is 670313783. The next prime is 670313827. The reversal of 670313785 is 587313076.

It is not a de Polignac number, because 670313785 - 2¹ = 670313783 is a prime.

It is a super-2 number, since 2×670313785² = 898641140722052450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (670313783) 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 15 ways as a sum of consecutive naturals, for example, 199570 + ... + 202900.

It is an arithmetic number, because the mean of its divisors is an integer number (50799672).

Almost surely, 2^670313785 is an apocalyptic number.

It is an amenable number.

670313785 is a deficient number, since it is larger than the sum of its proper divisors (142480967).

670313785 is a wasteful number, since it uses less digits than its factorization.

670313785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3744.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 670313785 is about 25890.4187876519. The cubic root of 670313785 is about 875.1705942210.

The spelling of 670313785 in words is "six hundred seventy million, three hundred thirteen thousand, seven hundred eighty-five".