68660645 has 8 divisors (see below), whose sum is σ = 83042304. Its totient is φ = 54495504.

The previous prime is 68660617. The next prime is 68660677. The reversal of 68660645 is 54606686.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68660645 - 2²² = 64466341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53429 + ... + 54698.

It is an arithmetic number, because the mean of its divisors is an integer number (10380288).

Almost surely, 2^68660645 is an apocalyptic number.

It is an amenable number.

68660645 is a deficient number, since it is larger than the sum of its proper divisors (14381659).

68660645 is a wasteful number, since it uses less digits than its factorization.

68660645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108259.

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 68660645 is about 8286.1719147022. The cubic root of 68660645 is about 409.4830784701.

The spelling of 68660645 in words is "sixty-eight million, six hundred sixty thousand, six hundred forty-five".