670604551 has 2 divisors, whose sum is σ = 670604552. Its totient is φ = 670604550.

The previous prime is 670604521. The next prime is 670604609. The reversal of 670604551 is 155406076.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 670604551 - 2¹³ = 670596359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670604521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335302275 + 335302276.

It is an arithmetic number, because the mean of its divisors is an integer number (335302276).

Almost surely, 2^670604551 is an apocalyptic number.

670604551 is a deficient number, since it is larger than the sum of its proper divisors (1).

670604551 is an equidigital number, since it uses as much as digits as its factorization.

670604551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 670604551 is about 25896.0334993605. The cubic root of 670604551 is about 875.2971185808.

The spelling of 670604551 in words is "six hundred seventy million, six hundred four thousand, five hundred fifty-one".