670938 has 16 divisors (see below), whose sum is σ = 1362720. Its totient is φ = 220176.

The previous prime is 670931. The next prime is 670951. The reversal of 670938 is 839076.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 670899 and 670908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670931) 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 7 ways as a sum of consecutive naturals, for example, 433 + ... + 1236.

It is an arithmetic number, because the mean of its divisors is an integer number (85170).

2⁶⁷⁰⁹³⁸ is an apocalyptic number.

670938 is an abundant number, since it is smaller than the sum of its proper divisors (691782).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

670938 is a wasteful number, since it uses less digits than its factorization.

670938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1741.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 670938 is about 819.1080514804. The cubic root of 670938 is about 87.5442171074.

The spelling of 670938 in words is "six hundred seventy thousand, nine hundred thirty-eight".