781896 has 16 divisors (see below), whose sum is σ = 1954800. Its totient is φ = 260624.

The previous prime is 781889. The next prime is 781897. The reversal of 781896 is 698187.

It is a super-2 number, since 2×781896² = 1222722709632, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (781897) by changing a digit.

781896 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 16266 + ... + 16313.

It is an arithmetic number, because the mean of its divisors is an integer number (122175).

2⁷⁸¹⁸⁹⁶ is an apocalyptic number.

It is an amenable number.

781896 is an abundant number, since it is smaller than the sum of its proper divisors (1172904).

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

781896 is a wasteful number, since it uses less digits than its factorization.

781896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32588 (or 32584 counting only the distinct ones).

The product of its digits is 24192, while the sum is 39.

The square root of 781896 is about 884.2488337567. The cubic root of 781896 is about 92.1261659054.

The spelling of 781896 in words is "seven hundred eighty-one thousand, eight hundred ninety-six".