804763945 has 16 divisors (see below), whose sum is σ = 975639888. Its totient is φ = 637228800.

The previous prime is 804763931. The next prime is 804764017. The reversal of 804763945 is 549367408.

It can be written as a sum of positive squares in 8 ways, for example, as 125014761 + 679749184 = 11181^2 + 26072^2 .

It is not a de Polignac number, because 804763945 - 2⁹ = 804763433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 804763895 and 804763904.

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, 215595 + ... + 219295.

It is an arithmetic number, because the mean of its divisors is an integer number (60977493).

Almost surely, 2^804763945 is an apocalyptic number.

It is an amenable number.

804763945 is a deficient number, since it is larger than the sum of its proper divisors (170875943).

804763945 is a wasteful number, since it uses less digits than its factorization.

804763945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4140.

The product of its (nonzero) digits is 725760, while the sum is 46.

The square root of 804763945 is about 28368.3616904466. The cubic root of 804763945 is about 930.1568105720.

It can be divided in two parts, 8047 and 63945, that multiplied together give a palindrome (514565415).

The spelling of 804763945 in words is "eight hundred four million, seven hundred sixty-three thousand, nine hundred forty-five".