670020653 has 2 divisors, whose sum is σ = 670020654. Its totient is φ = 670020652.

The previous prime is 670020649. The next prime is 670020683. The reversal of 670020653 is 356020076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 455310244 + 214710409 = 21338^2 + 14653^2 .

It is a cyclic number.

It is not a de Polignac number, because 670020653 - 2² = 670020649 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670020683) 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, 335010326 + 335010327.

It is an arithmetic number, because the mean of its divisors is an integer number (335010327).

Almost surely, 2^670020653 is an apocalyptic number.

It is an amenable number.

670020653 is a deficient number, since it is larger than the sum of its proper divisors (1).

670020653 is an equidigital number, since it uses as much as digits as its factorization.

670020653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 670020653 is about 25884.7571555153. The cubic root of 670020653 is about 875.0430032743.

The spelling of 670020653 in words is "six hundred seventy million, twenty thousand, six hundred fifty-three".