268069644 has 36 divisors (see below), whose sum is σ = 694151640. Its totient is φ = 87176640.

The previous prime is 268069619. The next prime is 268069663. The reversal of 268069644 is 446960862.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×268069644² = 143722668068573472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 268069644.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89334 + ... + 92285.

It is an arithmetic number, because the mean of its divisors is an integer number (19281990).

Almost surely, 2^268069644 is an apocalyptic number.

It is an amenable number.

268069644 is an abundant number, since it is smaller than the sum of its proper divisors (426081996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

268069644 is a wasteful number, since it uses less digits than its factorization.

268069644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181670 (or 181665 counting only the distinct ones).

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

The square root of 268069644 is about 16372.8324977690. The cubic root of 268069644 is about 644.7864156709.

The spelling of 268069644 in words is "two hundred sixty-eight million, sixty-nine thousand, six hundred forty-four".