782881065 has 16 divisors (see below), whose sum is σ = 1391788800. Its totient is φ = 417536496.

The previous prime is 782881049. The next prime is 782881079. The reversal of 782881065 is 560188287.

782881065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 782881065 - 2⁴ = 782881049 is a prime.

It is a super-2 number, since 2×782881065² = 1225805523871068450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 782881065.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2899425 + ... + 2899694.

It is an arithmetic number, because the mean of its divisors is an integer number (86986800).

Almost surely, 2^782881065 is an apocalyptic number.

It is an amenable number.

782881065 is a deficient number, since it is larger than the sum of its proper divisors (608907735).

782881065 is a wasteful number, since it uses less digits than its factorization.

782881065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5799133 (or 5799127 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 45.

The square root of 782881065 is about 27980.0118834857. The cubic root of 782881065 is about 921.6483779095.

The spelling of 782881065 in words is "seven hundred eighty-two million, eight hundred eighty-one thousand, sixty-five".