671237 has 4 divisors (see below), whose sum is σ = 767136. Its totient is φ = 575340.

The previous prime is 671233. The next prime is 671249. The reversal of 671237 is 732176.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 671237 - 2² = 671233 is a prime.

It is a super-2 number, since 2×671237² = 901118220338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 671237.

It is not an unprimeable number, because it can be changed into a prime (671233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47939 + ... + 47952.

It is an arithmetic number, because the mean of its divisors is an integer number (191784).

2⁶⁷¹²³⁷ is an apocalyptic number.

It is an amenable number.

671237 is a deficient number, since it is larger than the sum of its proper divisors (95899).

671237 is an equidigital number, since it uses as much as digits as its factorization.

671237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95898.

The product of its digits is 1764, while the sum is 26.

The square root of 671237 is about 819.2905467537. The cubic root of 671237 is about 87.5572197165.

The spelling of 671237 in words is "six hundred seventy-one thousand, two hundred thirty-seven".