670702213 has 4 divisors (see below), whose sum is σ = 674177548. Its totient is φ = 667226880.

The previous prime is 670702211. The next prime is 670702217. The reversal of 670702213 is 312207076.

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 209612484 + 461089729 = 14478^2 + 21473^2 .

It is a cyclic number.

It is not a de Polignac number, because 670702213 - 2¹ = 670702211 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 (670702211) 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, 1737378 + ... + 1737763.

It is an arithmetic number, because the mean of its divisors is an integer number (168544387).

Almost surely, 2^670702213 is an apocalyptic number.

It is an amenable number.

670702213 is a deficient number, since it is larger than the sum of its proper divisors (3475335).

670702213 is a wasteful number, since it uses less digits than its factorization.

670702213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3475334.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 670702213 is about 25897.9190862895. The cubic root of 670702213 is about 875.3396071670.

Adding to 670702213 its reverse (312207076), we get a palindrome (982909289).

The spelling of 670702213 in words is "six hundred seventy million, seven hundred two thousand, two hundred thirteen".