667922 has 8 divisors (see below), whose sum is σ = 1005372. Its totient is φ = 332800.

The previous prime is 667921. The next prime is 667949. The reversal of 667922 is 229766.

It can be written as a sum of positive squares in 2 ways, for example, as 657721 + 10201 = 811^2 + 101^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×667922² = 892239596168, which contains 22 as substring.

It is a plaindrome in base 14.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 667922.

It is not an unprimeable number, because it can be changed into a prime (667921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 722 + ... + 1362.

2⁶⁶⁷⁹²² is an apocalyptic number.

667922 is a deficient number, since it is larger than the sum of its proper divisors (337450).

667922 is a wasteful number, since it uses less digits than its factorization.

667922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164.

The product of its digits is 9072, while the sum is 32.

The square root of 667922 is about 817.2649509186. The cubic root of 667922 is about 87.4128438274.

The spelling of 667922 in words is "six hundred sixty-seven thousand, nine hundred twenty-two".