667443468 has 48 divisors (see below), whose sum is σ = 1614019680. Its totient is φ = 214416384.

The previous prime is 667443431. The next prime is 667443479. The reversal of 667443468 is 864344766.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234180 + ... + 237012.

It is an arithmetic number, because the mean of its divisors is an integer number (33625410).

Almost surely, 2^667443468 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 667443468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (807009840).

667443468 is an abundant number, since it is smaller than the sum of its proper divisors (946576212).

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

667443468 is a wasteful number, since it uses less digits than its factorization.

667443468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3546 (or 3544 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 48.

The square root of 667443468 is about 25834.9272884597. The cubic root of 667443468 is about 873.9196322724.

The spelling of 667443468 in words is "six hundred sixty-seven million, four hundred forty-three thousand, four hundred sixty-eight".