671249 has 2 divisors, whose sum is σ = 671250. Its totient is φ = 671248.

The previous prime is 671233. The next prime is 671257. The reversal of 671249 is 942176.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 462400 + 208849 = 680^2 + 457^2 .

It is a cyclic number.

It is not a de Polignac number, because 671249 - 2⁴ = 671233 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (671219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335624 + 335625.

It is an arithmetic number, because the mean of its divisors is an integer number (335625).

2⁶⁷¹²⁴⁹ is an apocalyptic number.

It is an amenable number.

671249 is a deficient number, since it is larger than the sum of its proper divisors (1).

671249 is an equidigital number, since it uses as much as digits as its factorization.

671249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 29.

The square root of 671249 is about 819.2978701303. The cubic root of 671249 is about 87.5577414797.

The spelling of 671249 in words is "six hundred seventy-one thousand, two hundred forty-nine".