1068881764 has 6 divisors (see below), whose sum is σ = 1870543094. Its totient is φ = 534440880.

The previous prime is 1068881731. The next prime is 1068881777. The reversal of 1068881764 is 4671888601.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 888516864 + 180364900 = 29808^2 + 13430^2 .

It is a super-2 number, since 2×1068881764² = 2285016450823503392, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133610217 + ... + 133610224.

Almost surely, 2^1068881764 is an apocalyptic number.

It is an amenable number.

1068881764 is a deficient number, since it is larger than the sum of its proper divisors (801661330).

1068881764 is a wasteful number, since it uses less digits than its factorization.

1068881764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267220445 (or 267220443 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 49.

The square root of 1068881764 is about 32693.7572634287. The cubic root of 1068881764 is about 1022.4526916617.

The spelling of 1068881764 in words is "one billion, sixty-eight million, eight hundred eighty-one thousand, seven hundred sixty-four".