667493844 has 24 divisors (see below), whose sum is σ = 1563955008. Its totient is φ = 221573760.

The previous prime is 667493843. The next prime is 667493857. The reversal of 667493844 is 448394766.

667493844 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 not an unprimeable number, because it can be changed into a prime (667493843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112512 + ... + 118295.

It is an arithmetic number, because the mean of its divisors is an integer number (65164792).

Almost surely, 2^667493844 is an apocalyptic number.

It is an amenable number.

667493844 is an abundant number, since it is smaller than the sum of its proper divisors (896461164).

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

667493844 is a wasteful number, since it uses less digits than its factorization.

667493844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231055 (or 231053 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 51.

The square root of 667493844 is about 25835.9022292623. The cubic root of 667493844 is about 873.9416183880.

The spelling of 667493844 in words is "six hundred sixty-seven million, four hundred ninety-three thousand, eight hundred forty-four".