68580621 has 16 divisors (see below), whose sum is σ = 105105600. Its totient is φ = 44143344.

The previous prime is 68580613. The next prime is 68580623. The reversal of 68580621 is 12608586.

It is a happy number.

It is not a de Polignac number, because 68580621 - 2³ = 68580613 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68580623) 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, 43011 + ... + 44576.

It is an arithmetic number, because the mean of its divisors is an integer number (6569100).

Almost surely, 2^68580621 is an apocalyptic number.

It is an amenable number.

68580621 is a deficient number, since it is larger than the sum of its proper divisors (36524979).

68580621 is a wasteful number, since it uses less digits than its factorization.

68580621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87625 (or 87619 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 68580621 is about 8281.3417391145. The cubic root of 68580621 is about 409.3239324135.

The spelling of 68580621 in words is "sixty-eight million, five hundred eighty thousand, six hundred twenty-one".