268261399 has 8 divisors (see below), whose sum is σ = 322720640. Its totient is φ = 217836216.

The previous prime is 268261369. The next prime is 268261421. The reversal of 268261399 is 993162862.

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

It is not a de Polignac number, because 268261399 - 2²¹ = 266164247 is a prime.

It is a super-3 number, since 3×268261399³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268261369) 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, 1008369 + ... + 1008634.

It is an arithmetic number, because the mean of its divisors is an integer number (40340080).

Almost surely, 2^268261399 is an apocalyptic number.

268261399 is a deficient number, since it is larger than the sum of its proper divisors (54459241).

268261399 is a wasteful number, since it uses less digits than its factorization.

268261399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2017029.

The product of its digits is 279936, while the sum is 46.

The square root of 268261399 is about 16378.6873405655. The cubic root of 268261399 is about 644.9401214369.

The spelling of 268261399 in words is "two hundred sixty-eight million, two hundred sixty-one thousand, three hundred ninety-nine".