268440669 has 48 divisors (see below), whose sum is σ = 464773440. Its totient is φ = 152681760.

The previous prime is 268440649. The next prime is 268440673. The reversal of 268440669 is 966044862.

It is not a de Polignac number, because 268440669 - 2⁷ = 268440541 is a prime.

It is a super-2 number, since 2×268440669² = 144120785546335122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268440629) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 437607 + ... + 438219.

It is an arithmetic number, because the mean of its divisors is an integer number (9682780).

Almost surely, 2^268440669 is an apocalyptic number.

It is an amenable number.

268440669 is a deficient number, since it is larger than the sum of its proper divisors (196332771).

268440669 is a wasteful number, since it uses less digits than its factorization.

268440669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967 (or 954 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The square root of 268440669 is about 16384.1590873624. The cubic root of 268440669 is about 645.0837533210.

The spelling of 268440669 in words is "two hundred sixty-eight million, four hundred forty thousand, six hundred sixty-nine".