1268864568 has 64 divisors (see below), whose sum is σ = 3528468000. Its totient is φ = 422493696.

The previous prime is 1268864563. The next prime is 1268864587. The reversal of 1268864568 is 8654688621.

1268864568 is a `hidden beast` number, since 12 + 6 + 8 + 8 + 64 + 568 = 666.

It is a super-2 number, since 2×1268864568² = 3220034583851653248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1268864563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 236896 + ... + 242192.

Almost surely, 2^1268864568 is an apocalyptic number.

1268864568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1268864568 is an abundant number, since it is smaller than the sum of its proper divisors (2259603432).

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

1268864568 is a wasteful number, since it uses less digits than its factorization.

1268864568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6421 (or 6411 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 54.

The square root of 1268864568 is about 35621.1253050770. The cubic root of 1268864568 is about 1082.6093080509.

The spelling of 1268864568 in words is "one billion, two hundred sixty-eight million, eight hundred sixty-four thousand, five hundred sixty-eight".