667492 has 24 divisors (see below), whose sum is σ = 1379840. Its totient is φ = 276480.

The previous prime is 667487. The next prime is 667501. The reversal of 667492 is 294766.

667492 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

667492 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 484 + ... + 1252.

2⁶⁶⁷⁴⁹² is an apocalyptic number.

667492 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 667492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (689920).

667492 is an abundant number, since it is smaller than the sum of its proper divisors (712348).

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

667492 is a wasteful number, since it uses less digits than its factorization.

667492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811 (or 809 counting only the distinct ones).

The product of its digits is 18144, while the sum is 34.

The square root of 667492 is about 817.0018359832. The cubic root of 667492 is about 87.3940813612.

The spelling of 667492 in words is "six hundred sixty-seven thousand, four hundred ninety-two".