67244816 has 20 divisors (see below), whose sum is σ = 130479372. Its totient is φ = 33572736.

The previous prime is 67244791. The next prime is 67244839. The reversal of 67244816 is 61844276.

It can be written as a sum of positive squares in 2 ways, for example, as 18524416 + 48720400 = 4304^2 + 6980^2 .

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 67244816.

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, 9650 + ... + 15086.

Almost surely, 2^67244816 is an apocalyptic number.

It is an amenable number.

67244816 is a deficient number, since it is larger than the sum of its proper divisors (63234556).

67244816 is a wasteful number, since it uses less digits than its factorization.

67244816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6218 (or 6212 counting only the distinct ones).

The product of its digits is 64512, while the sum is 38.

The square root of 67244816 is about 8200.2936532785. The cubic root of 67244816 is about 406.6489012515.

The spelling of 67244816 in words is "sixty-seven million, two hundred forty-four thousand, eight hundred sixteen".