670849 has 2 divisors, whose sum is σ = 670850. Its totient is φ = 670848.

The previous prime is 670823. The next prime is 670853. The reversal of 670849 is 948076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 651249 + 19600 = 807^2 + 140^2 .

It is a cyclic number.

It is not a de Polignac number, because 670849 - 2¹³ = 662657 is a prime.

It is a plaindrome in base 14.

It is not a weakly prime, because it can be changed into another prime (670049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335424 + 335425.

It is an arithmetic number, because the mean of its divisors is an integer number (335425).

2⁶⁷⁰⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

670849 is a deficient number, since it is larger than the sum of its proper divisors (1).

670849 is an equidigital number, since it uses as much as digits as its factorization.

670849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 670849 is about 819.0537222918. The cubic root of 670849 is about 87.5403460195.

The spelling of 670849 in words is "six hundred seventy thousand, eight hundred forty-nine".