68565993 has 8 divisors (see below), whose sum is σ = 91804800. Its totient is φ = 45518928.

The previous prime is 68565989. The next prime is 68566019. The reversal of 68565993 is 39956586.

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

It is not a de Polignac number, because 68565993 - 2² = 68565989 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68565943) 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, 47098 + ... + 48531.

It is an arithmetic number, because the mean of its divisors is an integer number (11475600).

Almost surely, 2^68565993 is an apocalyptic number.

It is an amenable number.

68565993 is a deficient number, since it is larger than the sum of its proper divisors (23238807).

68565993 is a wasteful number, since it uses less digits than its factorization.

68565993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95871.

The product of its digits is 1749600, while the sum is 51.

The square root of 68565993 is about 8280.4585017981. The cubic root of 68565993 is about 409.2948279028.

The spelling of 68565993 in words is "sixty-eight million, five hundred sixty-five thousand, nine hundred ninety-three".