783968805 has 12 divisors (see below), whose sum is σ = 1358879340. Its totient is φ = 418116672.

The previous prime is 783968791. The next prime is 783968807. The reversal of 783968805 is 508869387.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 430604001 + 353364804 = 20751^2 + 18798^2 .

It is not a de Polignac number, because 783968805 - 2⁷ = 783968677 is a prime.

It is a super-2 number, since 2×783968805² = 1229214174426256050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (783968807) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8710720 + ... + 8710809.

It is an arithmetic number, because the mean of its divisors is an integer number (113239945).

Almost surely, 2^783968805 is an apocalyptic number.

It is an amenable number.

783968805 is a deficient number, since it is larger than the sum of its proper divisors (574910535).

783968805 is a wasteful number, since it uses less digits than its factorization.

783968805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17421540 (or 17421537 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The square root of 783968805 is about 27999.4429408872. The cubic root of 783968805 is about 922.0750284399.

The spelling of 783968805 in words is "seven hundred eighty-three million, nine hundred sixty-eight thousand, eight hundred five".