805374965 has 4 divisors (see below), whose sum is σ = 966449964. Its totient is φ = 644299968.

The previous prime is 805374961. The next prime is 805374991. The reversal of 805374965 is 569473508.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 481626916 + 323748049 = 21946^2 + 17993^2 .

It is a cyclic number.

It is not a de Polignac number, because 805374965 - 2² = 805374961 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805374961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80537492 + ... + 80537501.

It is an arithmetic number, because the mean of its divisors is an integer number (241612491).

Almost surely, 2^805374965 is an apocalyptic number.

It is an amenable number.

805374965 is a deficient number, since it is larger than the sum of its proper divisors (161074999).

805374965 is a wasteful number, since it uses less digits than its factorization.

805374965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161074998.

The product of its (nonzero) digits is 907200, while the sum is 47.

The square root of 805374965 is about 28379.1290387848. The cubic root of 805374965 is about 930.3921593512.

The spelling of 805374965 in words is "eight hundred five million, three hundred seventy-four thousand, nine hundred sixty-five".