67718416 has 20 divisors (see below), whose sum is σ = 132560092. Its totient is φ = 33509376.

The previous prime is 67718411. The next prime is 67718447. The reversal of 67718416 is 61481776.

It can be written as a sum of positive squares in 2 ways, for example, as 49056016 + 18662400 = 7004^2 + 4320^2 .

It is not an unprimeable number, because it can be changed into a prime (67718411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20265 + ... + 23368.

Almost surely, 2^67718416 is an apocalyptic number.

It is an amenable number.

67718416 is a deficient number, since it is larger than the sum of its proper divisors (64841676).

67718416 is a wasteful number, since it uses less digits than its factorization.

67718416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43738 (or 43732 counting only the distinct ones).

The product of its digits is 56448, while the sum is 40.

The square root of 67718416 is about 8229.1200015555. The cubic root of 67718416 is about 407.6013342779.

The spelling of 67718416 in words is "sixty-seven million, seven hundred eighteen thousand, four hundred sixteen".