68260643 has 8 divisors (see below), whose sum is σ = 74574336. Its totient is φ = 61965000.

The previous prime is 68260639. The next prime is 68260649. The reversal of 68260643 is 34606286.

It is a Cunningham number, because it is equal to 8262²-1.

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 68260643 - 2² = 68260639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68260649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4130 + ... + 12392.

It is an arithmetic number, because the mean of its divisors is an integer number (9321792).

Almost surely, 2^68260643 is an apocalyptic number.

68260643 is a deficient number, since it is larger than the sum of its proper divisors (6313693).

68260643 is a wasteful number, since it uses less digits than its factorization.

68260643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9025.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 68260643 is about 8261.9999394820. Note that the first 4 decimals coincide. The cubic root of 68260643 is about 408.6863427756.

The spelling of 68260643 in words is "sixty-eight million, two hundred sixty thousand, six hundred forty-three".