68660001 has 16 divisors (see below), whose sum is σ = 102349120. Its totient is φ = 45489600.

The previous prime is 68659999. The next prime is 68660017. The reversal of 68660001 is 10006686.

It is not a de Polignac number, because 68660001 - 2¹ = 68659999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68660041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3400 + ... + 12201.

It is an arithmetic number, because the mean of its divisors is an integer number (6396820).

Almost surely, 2^68660001 is an apocalyptic number.

It is an amenable number.

68660001 is a deficient number, since it is larger than the sum of its proper divisors (33689119).

68660001 is a wasteful number, since it uses less digits than its factorization.

68660001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15773 (or 15767 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 68660001 is about 8286.1330546884. The cubic root of 68660001 is about 409.4817982222.

Adding to 68660001 its reverse (10006686), we get a palindrome (78666687).

The spelling of 68660001 in words is "sixty-eight million, six hundred sixty thousand, one".