670923 has 24 divisors (see below), whose sum is σ = 1100736. Its totient is φ = 405000.

The previous prime is 670919. The next prime is 670931. The reversal of 670923 is 329076.

670923 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 670923 - 2² = 670919 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an alternating number because its digits alternate between even and odd.

670923 is strictly pandigital in base 7.

670923 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (670903) 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 23 ways as a sum of consecutive naturals, for example, 2548 + ... + 2798.

It is an arithmetic number, because the mean of its divisors is an integer number (45864).

2⁶⁷⁰⁹²³ is an apocalyptic number.

670923 is a deficient number, since it is larger than the sum of its proper divisors (429813).

670923 is a wasteful number, since it uses less digits than its factorization.

670923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277 (or 265 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 670923 is about 819.0988951281. The cubic root of 670923 is about 87.5435647009.

Adding to 670923 its reverse (329076), we get a palindrome (999999).

The spelling of 670923 in words is "six hundred seventy thousand, nine hundred twenty-three".