801616265 has 8 divisors (see below), whose sum is σ = 962228808. Its totient is φ = 641100160.

The previous prime is 801616261. The next prime is 801616271. The reversal of 801616265 is 562616108.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 236175424 + 565440841 = 15368^2 + 23779^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 801616265 - 2² = 801616261 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (801616261) by changing a digit.

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, 4346 + ... + 40275.

It is an arithmetic number, because the mean of its divisors is an integer number (120278601).

Almost surely, 2^801616265 is an apocalyptic number.

It is an amenable number.

801616265 is a deficient number, since it is larger than the sum of its proper divisors (160612543).

801616265 is a wasteful number, since it uses less digits than its factorization.

801616265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48219.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 801616265 is about 28312.8286294393. The cubic root of 801616265 is about 928.9425159758.

The spelling of 801616265 in words is "eight hundred one million, six hundred sixteen thousand, two hundred sixty-five".