765406436 has 24 divisors (see below), whose sum is σ = 1432886616. Its totient is φ = 356474880.

The previous prime is 765406427. The next prime is 765406451. The reversal of 765406436 is 634604567.

It can be written as a sum of positive squares in 4 ways, for example, as 428904100 + 336502336 = 20710^2 + 18344^2 .

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 765406393 and 765406402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51425 + ... + 64616.

It is an arithmetic number, because the mean of its divisors is an integer number (59703609).

Almost surely, 2^765406436 is an apocalyptic number.

It is an amenable number.

765406436 is a deficient number, since it is larger than the sum of its proper divisors (667480180).

765406436 is a wasteful number, since it uses less digits than its factorization.

765406436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116159 (or 116157 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 41.

The square root of 765406436 is about 27665.9797585410. The cubic root of 765406436 is about 914.7393669766.

The spelling of 765406436 in words is "seven hundred sixty-five million, four hundred six thousand, four hundred thirty-six".