667546216 has 16 divisors (see below), whose sum is σ = 1252225440. Its totient is φ = 333619440.

The previous prime is 667546211. The next prime is 667546223. The reversal of 667546216 is 612645766.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (667546211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 435 + ... + 36541.

It is an arithmetic number, because the mean of its divisors is an integer number (78264090).

Almost surely, 2^667546216 is an apocalyptic number.

It is an amenable number.

667546216 is a deficient number, since it is larger than the sum of its proper divisors (584679224).

667546216 is a wasteful number, since it uses less digits than its factorization.

667546216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38424 (or 38420 counting only the distinct ones).

The product of its digits is 362880, while the sum is 43.

The square root of 667546216 is about 25836.9157602064. The cubic root of 667546216 is about 873.9644744657.

The spelling of 667546216 in words is "six hundred sixty-seven million, five hundred forty-six thousand, two hundred sixteen".