666167392 has 48 divisors (see below), whose sum is σ = 1434392064. Its totient is φ = 302032000.

The previous prime is 666167371. The next prime is 666167393. The reversal of 666167392 is 293761666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666167393) 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, 149517 + ... + 153907.

It is an arithmetic number, because the mean of its divisors is an integer number (29883168).

Almost surely, 2^666167392 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 666167392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (717196032).

666167392 is an abundant number, since it is smaller than the sum of its proper divisors (768224672).

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

666167392 is a wasteful number, since it uses less digits than its factorization.

666167392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4843 (or 4835 counting only the distinct ones).

The product of its digits is 489888, while the sum is 46.

The square root of 666167392 is about 25810.2187514945. The cubic root of 666167392 is about 873.3623319755.

The spelling of 666167392 in words is "six hundred sixty-six million, one hundred sixty-seven thousand, three hundred ninety-two".