667692160 has 64 divisors (see below), whose sum is σ = 1599523200. Its totient is φ = 266521600.

The previous prime is 667692131. The next prime is 667692227. The reversal of 667692160 is 61296766.

667692160 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 459435 + ... + 460885.

It is an arithmetic number, because the mean of its divisors is an integer number (24992550).

Almost surely, 2^667692160 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 667692160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (799761600).

667692160 is an abundant number, since it is smaller than the sum of its proper divisors (931831040).

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

667692160 is a wasteful number, since it uses less digits than its factorization.

667692160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2189 (or 2177 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 667692160 is about 25839.7399367718. The cubic root of 667692160 is about 874.0281607314.

The spelling of 667692160 in words is "six hundred sixty-seven million, six hundred ninety-two thousand, one hundred sixty".