67863668 has 18 divisors (see below), whose sum is σ = 125343666. Its totient is φ = 32145264.

The previous prime is 67863667. The next prime is 67863671. The reversal of 67863668 is 86636876.

It can be written as a sum of positive squares in only one way, i.e., 57183844 + 10679824 = 7562^2 + 3268^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67863667) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22055 + ... + 24942.

It is an arithmetic number, because the mean of its divisors is an integer number (6963537).

Almost surely, 2^67863668 is an apocalyptic number.

It is an amenable number.

67863668 is a deficient number, since it is larger than the sum of its proper divisors (57479998).

67863668 is a wasteful number, since it uses less digits than its factorization.

67863668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47039 (or 47018 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 50.

The square root of 67863668 is about 8237.9407621080. The cubic root of 67863668 is about 407.8925530853.

It can be divided in two parts, 678 and 63668, that added together give a palindrome (64346).

The spelling of 67863668 in words is "sixty-seven million, eight hundred sixty-three thousand, six hundred sixty-eight".