68665760 has 24 divisors (see below), whose sum is σ = 162223236. Its totient is φ = 27466240.

The previous prime is 68665739. The next prime is 68665763. The reversal of 68665760 is 6756686.

It can be written as a sum of positive squares in 2 ways, for example, as 63808144 + 4857616 = 7988^2 + 2204^2 .

It is not an unprimeable number, because it can be changed into a prime (68665763) 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, 214421 + ... + 214740.

Almost surely, 2^68665760 is an apocalyptic number.

It is an amenable number.

68665760 is an abundant number, since it is smaller than the sum of its proper divisors (93557476).

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

68665760 is a wasteful number, since it uses less digits than its factorization.

68665760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429176 (or 429168 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 68665760 is about 8286.4805557004. The cubic root of 68665760 is about 409.4932466139.

The spelling of 68665760 in words is "sixty-eight million, six hundred sixty-five thousand, seven hundred sixty".