670121149 has 2 divisors, whose sum is σ = 670121150. Its totient is φ = 670121148.

The previous prime is 670121143. The next prime is 670121189. The reversal of 670121149 is 941121076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 355058649 + 315062500 = 18843^2 + 17750^2 .

It is a cyclic number.

It is not a de Polignac number, because 670121149 - 2¹¹ = 670119101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 670121149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670121143) 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, 335060574 + 335060575.

It is an arithmetic number, because the mean of its divisors is an integer number (335060575).

Almost surely, 2^670121149 is an apocalyptic number.

It is an amenable number.

670121149 is a deficient number, since it is larger than the sum of its proper divisors (1).

670121149 is an equidigital number, since it uses as much as digits as its factorization.

670121149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 670121149 is about 25886.6983024101. The cubic root of 670121149 is about 875.0867501473.

The spelling of 670121149 in words is "six hundred seventy million, one hundred twenty-one thousand, one hundred forty-nine".