670693 has 2 divisors, whose sum is σ = 670694.
Its totient is φ = 670692.
The previous prime is 670673. The next prime is 670711. The reversal of 670693 is 396076.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 567009 + 103684 = 753^2 + 322^2
It is a cyclic number.
It is not a de Polignac number, because 670693 - 217 = 539621 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (670613) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335346 + 335347.
It is an arithmetic number, because the mean of its divisors is an integer number (335347).
2670693 is an apocalyptic number.
It is an amenable number.
670693 is a deficient number, since it is larger than the sum of its proper divisors (1).
670693 is an equidigital number, since it uses as much as digits as its factorization.
670693 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 6804, while the sum is 31.
The square root of 670693 is about 818.9584849063.
The cubic root of 670693 is about 87.5335599158.
The spelling of 670693 in words is "six hundred seventy thousand, six hundred ninety-three".