670046389 has 4 divisors (see below), whose sum is σ = 670172524. Its totient is φ = 669920256.

The previous prime is 670046371. The next prime is 670046413. The reversal of 670046389 is 983640076.

It is a happy number.

670046389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 359405764 + 310640625 = 18958^2 + 17625^2 .

It is a cyclic number.

It is not a de Polignac number, because 670046389 - 2⁷ = 670046261 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 (670046309) 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, 54732 + ... + 65845.

It is an arithmetic number, because the mean of its divisors is an integer number (167543131).

Almost surely, 2^670046389 is an apocalyptic number.

It is an amenable number.

670046389 is a deficient number, since it is larger than the sum of its proper divisors (126135).

670046389 is a wasteful number, since it uses less digits than its factorization.

670046389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126134.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 670046389 is about 25885.2542772908. The cubic root of 670046389 is about 875.0542068187.

The spelling of 670046389 in words is "six hundred seventy million, forty-six thousand, three hundred eighty-nine".