1068077840 has 20 divisors (see below), whose sum is σ = 2483281164. Its totient is φ = 427231104.

The previous prime is 1068077833. The next prime is 1068077849. The reversal of 1068077840 is 487708601.

1068077840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 784896256 + 283181584 = 28016^2 + 16828^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×1068077840² = 2281580544598131200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1068077849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6675407 + ... + 6675566.

Almost surely, 2^1068077840 is an apocalyptic number.

1068077840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1068077840 is an abundant number, since it is smaller than the sum of its proper divisors (1415203324).

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

1068077840 is a wasteful number, since it uses less digits than its factorization.

1068077840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13350986 (or 13350980 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 1068077840 is about 32681.4601876966. The cubic root of 1068077840 is about 1022.1962927330.

The spelling of 1068077840 in words is "one billion, sixty-eight million, seventy-seven thousand, eight hundred forty".