670085389 has 2 divisors, whose sum is σ = 670085390. Its totient is φ = 670085388.

The previous prime is 670085371. The next prime is 670085411. The reversal of 670085389 is 983580076.

670085389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 578787364 + 91298025 = 24058^2 + 9555^2 .

It is a cyclic number.

It is not a de Polignac number, because 670085389 - 2⁵ = 670085357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670085359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335042694 + 335042695.

It is an arithmetic number, because the mean of its divisors is an integer number (335042695).

Almost surely, 2^670085389 is an apocalyptic number.

It is an amenable number.

670085389 is a deficient number, since it is larger than the sum of its proper divisors (1).

670085389 is an equidigital number, since it uses as much as digits as its factorization.

670085389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 670085389 is about 25886.0075909747. The cubic root of 670085389 is about 875.0711839775.

The spelling of 670085389 in words is "six hundred seventy million, eighty-five thousand, three hundred eighty-nine".