68660641 has 16 divisors (see below), whose sum is σ = 81095040. Its totient is φ = 56903040.

The previous prime is 68660617. The next prime is 68660677. The reversal of 68660641 is 14606686.

It is not a de Polignac number, because 68660641 - 2⁷ = 68660513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68660641.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45621 + ... + 47101.

It is an arithmetic number, because the mean of its divisors is an integer number (5068440).

Almost surely, 2^68660641 is an apocalyptic number.

It is an amenable number.

68660641 is a deficient number, since it is larger than the sum of its proper divisors (12434399).

68660641 is a wasteful number, since it uses less digits than its factorization.

68660641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1704.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 68660641 is about 8286.1716733362. The cubic root of 68660641 is about 409.4830705182.

The spelling of 68660641 in words is "sixty-eight million, six hundred sixty thousand, six hundred forty-one".