670384573 has 2 divisors, whose sum is σ = 670384574. Its totient is φ = 670384572.

The previous prime is 670384549. The next prime is 670384621. The reversal of 670384573 is 375483076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 603095364 + 67289209 = 24558^2 + 8203^2 .

It is a cyclic number.

It is not a de Polignac number, because 670384573 - 2²¹ = 668287421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670384523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335192286 + 335192287.

It is an arithmetic number, because the mean of its divisors is an integer number (335192287).

Almost surely, 2^670384573 is an apocalyptic number.

It is an amenable number.

670384573 is a deficient number, since it is larger than the sum of its proper divisors (1).

670384573 is an equidigital number, since it uses as much as digits as its factorization.

670384573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423360, while the sum is 43.

The square root of 670384573 is about 25891.7858209896. The cubic root of 670384573 is about 875.2014003880.

The spelling of 670384573 in words is "six hundred seventy million, three hundred eighty-four thousand, five hundred seventy-three".