68666600 has 24 divisors (see below), whose sum is σ = 159650310. Its totient is φ = 27466560.

The previous prime is 68666599. The next prime is 68666603. The reversal of 68666600 is 666686.

It can be written as a sum of positive squares in 3 ways, for example, as 61999876 + 6666724 = 7874^2 + 2582^2 .

It is not an unprimeable number, because it can be changed into a prime (68666603) 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, 171467 + ... + 171866.

Almost surely, 2^68666600 is an apocalyptic number.

It is an amenable number.

68666600 is an abundant number, since it is smaller than the sum of its proper divisors (90983710).

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

68666600 is a wasteful number, since it uses less digits than its factorization.

68666600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343349 (or 343340 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 68666600 is about 8286.5312405131. The cubic root of 68666600 is about 409.4949164074.

The spelling of 68666600 in words is "sixty-eight million, six hundred sixty-six thousand, six hundred".