67885816 has 8 divisors (see below), whose sum is σ = 127285920. Its totient is φ = 33942904.

The previous prime is 67885789. The next prime is 67885819. The reversal of 67885816 is 61858876.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 67885816.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67885819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4242856 + ... + 4242871.

It is an arithmetic number, because the mean of its divisors is an integer number (15910740).

Almost surely, 2^67885816 is an apocalyptic number.

It is an amenable number.

67885816 is a deficient number, since it is larger than the sum of its proper divisors (59400104).

67885816 is a wasteful number, since it uses less digits than its factorization.

67885816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8485733 (or 8485729 counting only the distinct ones).

The product of its digits is 645120, while the sum is 49.

The square root of 67885816 is about 8239.2849204285. The cubic root of 67885816 is about 407.9369215568.

The spelling of 67885816 in words is "sixty-seven million, eight hundred eighty-five thousand, eight hundred sixteen".