268335993 has 12 divisors (see below), whose sum is σ = 377604528. Its totient is φ = 169474680.

The previous prime is 268335983. The next prime is 268336001. The reversal of 268335993 is 399533862.

It is not a de Polignac number, because 268335993 - 2¹⁸ = 268073849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (268335923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122803 + ... + 124968.

It is an arithmetic number, because the mean of its divisors is an integer number (31467044).

Almost surely, 2^268335993 is an apocalyptic number.

It is an amenable number.

268335993 is a deficient number, since it is larger than the sum of its proper divisors (109268535).

268335993 is a wasteful number, since it uses less digits than its factorization.

268335993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247812 (or 247793 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 48.

The square root of 268335993 is about 16380.9643489021. The cubic root of 268335993 is about 644.9998942371. Note that the first 3 decimals are identical.

The spelling of 268335993 in words is "two hundred sixty-eight million, three hundred thirty-five thousand, nine hundred ninety-three".