670109249 has 2 divisors, whose sum is σ = 670109250. Its totient is φ = 670109248.

The previous prime is 670109243. The next prime is 670109273. The reversal of 670109249 is 942901076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 367105600 + 303003649 = 19160^2 + 17407^2 .

It is a cyclic number.

It is not a de Polignac number, because 670109249 - 2⁸ = 670108993 is a prime.

It is not a weakly prime, because it can be changed into another prime (670109243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335054624 + 335054625.

It is an arithmetic number, because the mean of its divisors is an integer number (335054625).

Almost surely, 2^670109249 is an apocalyptic number.

It is an amenable number.

670109249 is a deficient number, since it is larger than the sum of its proper divisors (1).

670109249 is an equidigital number, since it uses as much as digits as its factorization.

670109249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 670109249 is about 25886.4684536149. The cubic root of 670109249 is about 875.0815701915.

The spelling of 670109249 in words is "six hundred seventy million, one hundred nine thousand, two hundred forty-nine".