67222816 has 12 divisors (see below), whose sum is σ = 132344982. Its totient is φ = 33611392.

The previous prime is 67222789. The next prime is 67222823. The reversal of 67222816 is 61822276.

It can be written as a sum of positive squares in only one way, i.e., 67174416 + 48400 = 8196^2 + 220^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050325 + ... + 1050388.

Almost surely, 2^67222816 is an apocalyptic number.

It is an amenable number.

67222816 is a deficient number, since it is larger than the sum of its proper divisors (65122166).

67222816 is a wasteful number, since it uses less digits than its factorization.

67222816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100723 (or 2100715 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 67222816 is about 8198.9521281686. The cubic root of 67222816 is about 406.6045496213.

The spelling of 67222816 in words is "sixty-seven million, two hundred twenty-two thousand, eight hundred sixteen".