68668000 has 48 divisors (see below), whose sum is σ = 168727104. Its totient is φ = 27465600.

The previous prime is 68667997. The next prime is 68668001. The reversal of 68668000 is 86686.

68668000 = 227² + 228² + ... + 601².

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68668001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4584 + ... + 12583.

It is an arithmetic number, because the mean of its divisors is an integer number (3515148).

Almost surely, 2^68668000 is an apocalyptic number.

It is an amenable number.

68668000 is an abundant number, since it is smaller than the sum of its proper divisors (100059104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68668000 is a wasteful number, since it uses less digits than its factorization.

68668000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17192 (or 17174 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 68668000 is about 8286.6157145122. The cubic root of 68668000 is about 409.4976993663.

It can be divided in two parts, 686 and 68000, that added together give a palindrome (68686).

The spelling of 68668000 in words is "sixty-eight million, six hundred sixty-eight thousand".