670837 has 4 divisors (see below), whose sum is σ = 710316. Its totient is φ = 631360.

The previous prime is 670823. The next prime is 670849. The reversal of 670837 is 738076.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 367236 + 303601 = 606^2 + 551^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-670837 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

670837 is a lucky number.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 670799 and 670808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19714 + ... + 19747.

It is an arithmetic number, because the mean of its divisors is an integer number (177579).

2⁶⁷⁰⁸³⁷ is an apocalyptic number.

It is an amenable number.

670837 is a deficient number, since it is larger than the sum of its proper divisors (39479).

670837 is a wasteful number, since it uses less digits than its factorization.

670837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39478.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 670837 is about 819.0463967322. The cubic root of 670837 is about 87.5398240489.

The spelling of 670837 in words is "six hundred seventy thousand, eight hundred thirty-seven".