268020644 has 12 divisors (see below), whose sum is σ = 471467724. Its totient is φ = 133315584.

The previous prime is 268020617. The next prime is 268020653. The reversal of 268020644 is 446020862.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 193543744 + 74476900 = 13912^2 + 8630^2 .

It is a super-2 number, since 2×268020644² = 143670131220349472, 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 268020644.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172817 + ... + 174360.

It is an arithmetic number, because the mean of its divisors is an integer number (39288977).

Almost surely, 2^268020644 is an apocalyptic number.

It is an amenable number.

268020644 is a deficient number, since it is larger than the sum of its proper divisors (203447080).

268020644 is a wasteful number, since it uses less digits than its factorization.

268020644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347374 (or 347372 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 268020644 is about 16371.3360481055. The cubic root of 268020644 is about 644.7471268016.

The spelling of 268020644 in words is "two hundred sixty-eight million, twenty thousand, six hundred forty-four".