667245216 has 48 divisors (see below), whose sum is σ = 1910750688. Its totient is φ = 202195200.

The previous prime is 667245199. The next prime is 667245283. The reversal of 667245216 is 612542766.

It is a tau number, because it is divible by the number of its divisors (48).

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, 314875 + ... + 316986.

It is an arithmetic number, because the mean of its divisors is an integer number (39807306).

Almost surely, 2^667245216 is an apocalyptic number.

667245216 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

667245216 is an abundant number, since it is smaller than the sum of its proper divisors (1243505472).

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

667245216 is a wasteful number, since it uses less digits than its factorization.

667245216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631885 (or 631877 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

The square root of 667245216 is about 25831.0901047555. The cubic root of 667245216 is about 873.8330963682.

The spelling of 667245216 in words is "six hundred sixty-seven million, two hundred forty-five thousand, two hundred sixteen".