781068 has 12 divisors (see below), whose sum is σ = 1822520. Its totient is φ = 260352.

The previous prime is 781063. The next prime is 781069. The reversal of 781068 is 860187.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×781068² = 1220134441248, which contains 22 as substring.

It is a nialpdrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (781063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32533 + ... + 32556.

2⁷⁸¹⁰⁶⁸ is an apocalyptic number.

It is an amenable number.

781068 is an abundant number, since it is smaller than the sum of its proper divisors (1041452).

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

781068 is a wasteful number, since it uses less digits than its factorization.

781068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65096 (or 65094 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 781068 is about 883.7805157391. The cubic root of 781068 is about 92.0936349774.

The spelling of 781068 in words is "seven hundred eighty-one thousand, sixty-eight".