667152216 has 96 divisors (see below), whose sum is σ = 1954031040. Its totient is φ = 204831744.

The previous prime is 667152179. The next prime is 667152223. The reversal of 667152216 is 612251766.

It is a happy number.

667152216 is a `hidden beast` number, since 66 + 71 + 522 + 1 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51730 + ... + 63326.

It is an arithmetic number, because the mean of its divisors is an integer number (20354490).

Almost surely, 2^667152216 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 667152216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (977015520).

667152216 is an abundant number, since it is smaller than the sum of its proper divisors (1286878824).

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

667152216 is a wasteful number, since it uses less digits than its factorization.

667152216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11673 (or 11666 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 667152216 is about 25829.2898857092. The cubic root of 667152216 is about 873.7924964748.

The spelling of 667152216 in words is "six hundred sixty-seven million, one hundred fifty-two thousand, two hundred sixteen".