667374 has 8 divisors (see below), whose sum is σ = 1334760. Its totient is φ = 222456.

The previous prime is 667367. The next prime is 667379. The reversal of 667374 is 473766.

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

667374 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55609 + ... + 55620.

It is an arithmetic number, because the mean of its divisors is an integer number (166845).

2⁶⁶⁷³⁷⁴ is an apocalyptic number.

667374 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

667374 is a wasteful number, since it uses less digits than its factorization.

667374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111234.

The product of its digits is 21168, while the sum is 33.

The square root of 667374 is about 816.9296175314. The cubic root of 667374 is about 87.3889311824.

It can be divided in two parts, 66 and 7374, that multiplied together give a palindrome (486684).

The spelling of 667374 in words is "six hundred sixty-seven thousand, three hundred seventy-four".