670219939 has 2 divisors, whose sum is σ = 670219940. Its totient is φ = 670219938.

The previous prime is 670219933. The next prime is 670219943. The reversal of 670219939 is 939912076.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-670219939 is a prime.

It is not a weakly prime, because it can be changed into another prime (670219933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335109969 + 335109970.

It is an arithmetic number, because the mean of its divisors is an integer number (335109970).

Almost surely, 2^670219939 is an apocalyptic number.

670219939 is a deficient number, since it is larger than the sum of its proper divisors (1).

670219939 is an equidigital number, since it uses as much as digits as its factorization.

670219939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 183708, while the sum is 46.

The square root of 670219939 is about 25888.6063549199. The cubic root of 670219939 is about 875.1297501195.

The spelling of 670219939 in words is "six hundred seventy million, two hundred nineteen thousand, nine hundred thirty-nine".