670331243 has 4 divisors (see below), whose sum is σ = 676968288. Its totient is φ = 663694200.

The previous prime is 670331203. The next prime is 670331269. The reversal of 670331243 is 342133076.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 670331243 - 2⁸ = 670330987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (670331203) 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, 3318371 + ... + 3318572.

It is an arithmetic number, because the mean of its divisors is an integer number (169242072).

Almost surely, 2^670331243 is an apocalyptic number.

670331243 is a deficient number, since it is larger than the sum of its proper divisors (6637045).

670331243 is a wasteful number, since it uses less digits than its factorization.

670331243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6637044.

The product of its (nonzero) digits is 9072, while the sum is 29.

The square root of 670331243 is about 25890.7559372066. The cubic root of 670331243 is about 875.1781919540.

The spelling of 670331243 in words is "six hundred seventy million, three hundred thirty-one thousand, two hundred forty-three".