667369 has 8 divisors (see below), whose sum is σ = 726408. Its totient is φ = 610560.

The previous prime is 667367. The next prime is 667379. The reversal of 667369 is 963766.

It can be written as a sum of positive squares in 4 ways, for example, as 375769 + 291600 = 613^2 + 540^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 667369 - 2¹ = 667367 is a prime.

It is a super-2 number, since 2×667369² = 890762764322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667361) 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, 99 + ... + 1159.

It is an arithmetic number, because the mean of its divisors is an integer number (90801).

2⁶⁶⁷³⁶⁹ is an apocalyptic number.

It is an amenable number.

667369 is a deficient number, since it is larger than the sum of its proper divisors (59039).

667369 is a wasteful number, since it uses less digits than its factorization.

667369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115.

The product of its digits is 40824, while the sum is 37.

The square root of 667369 is about 816.9265572865. The cubic root of 667369 is about 87.3887129411.

The spelling of 667369 in words is "six hundred sixty-seven thousand, three hundred sixty-nine".