670947241 has 2 divisors, whose sum is σ = 670947242. Its totient is φ = 670947240.

The previous prime is 670947239. The next prime is 670947259. The reversal of 670947241 is 142749076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 606883225 + 64064016 = 24635^2 + 8004^2 .

It is a cyclic number.

It is not a de Polignac number, because 670947241 - 2¹ = 670947239 is a prime.

Together with 670947239, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 670947194 and 670947203.

It is not a weakly prime, because it can be changed into another prime (670947281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335473620 + 335473621.

It is an arithmetic number, because the mean of its divisors is an integer number (335473621).

Almost surely, 2^670947241 is an apocalyptic number.

It is an amenable number.

670947241 is a deficient number, since it is larger than the sum of its proper divisors (1).

670947241 is an equidigital number, since it uses as much as digits as its factorization.

670947241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 670947241 is about 25902.6493046561. The cubic root of 670947241 is about 875.4461902851.

The spelling of 670947241 in words is "six hundred seventy million, nine hundred forty-seven thousand, two hundred forty-one".