67278216 has 16 divisors (see below), whose sum is σ = 168195600. Its totient is φ = 22426064.

The previous prime is 67278209. The next prime is 67278227. The reversal of 67278216 is 61287276.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1401606 + ... + 1401653.

It is an arithmetic number, because the mean of its divisors is an integer number (10512225).

Almost surely, 2^67278216 is an apocalyptic number.

It is an amenable number.

67278216 is an abundant number, since it is smaller than the sum of its proper divisors (100917384).

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

67278216 is a wasteful number, since it uses less digits than its factorization.

67278216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2803268 (or 2803264 counting only the distinct ones).

The product of its digits is 56448, while the sum is 39.

The square root of 67278216 is about 8202.3299128967. The cubic root of 67278216 is about 406.7162166027.

The spelling of 67278216 in words is "sixty-seven million, two hundred seventy-eight thousand, two hundred sixteen".