68867188 has 12 divisors (see below), whose sum is σ = 129788260. Its totient is φ = 31784832.

The previous prime is 68867179. The next prime is 68867203. The reversal of 68867188 is 88176886.

It can be written as a sum of positive squares in 2 ways, for example, as 25280784 + 43586404 = 5028^2 + 6602^2 .

It is a Harshad number since it is a multiple of its sum of digits (52), and also a Moran number because the ratio is a prime number: 1324369 = 68867188 / (6 + 8 + 8 + 6 + 7 + 1 + 8 + 8).

It is a congruent number.

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, 662133 + ... + 662236.

Almost surely, 2^68867188 is an apocalyptic number.

It is an amenable number.

68867188 is a deficient number, since it is larger than the sum of its proper divisors (60921072).

68867188 is a wasteful number, since it uses less digits than its factorization.

68867188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324386 (or 1324384 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 52.

The square root of 68867188 is about 8298.6256693503. The cubic root of 68867188 is about 409.8932658910.

It can be divided in two parts, 688 and 67188, that added together give a palindrome (67876).

The spelling of 68867188 in words is "sixty-eight million, eight hundred sixty-seven thousand, one hundred eighty-eight".