67814816 has 24 divisors (see below), whose sum is σ = 134084160. Its totient is φ = 33761728.

The previous prime is 67814807. The next prime is 67814837. The reversal of 67814816 is 61841876.

It is a super-2 number, since 2×67814816² = 9197698538227712, which contains 22 as substring.

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, 3215 + ... + 12081.

It is an arithmetic number, because the mean of its divisors is an integer number (5586840).

Almost surely, 2^67814816 is an apocalyptic number.

It is an amenable number.

67814816 is a deficient number, since it is larger than the sum of its proper divisors (66269344).

67814816 is a wasteful number, since it uses less digits than its factorization.

67814816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9116 (or 9108 counting only the distinct ones).

The product of its digits is 64512, while the sum is 41.

The square root of 67814816 is about 8234.9751669328. The cubic root of 67814816 is about 407.7946550942.

The spelling of 67814816 in words is "sixty-seven million, eight hundred fourteen thousand, eight hundred sixteen".