801632865 has 48 divisors (see below), whose sum is σ = 1414413504. Its totient is φ = 387404160.

The previous prime is 801632863. The next prime is 801632911. The reversal of 801632865 is 568236108.

It is a happy number.

It is not a de Polignac number, because 801632865 - 2¹ = 801632863 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (801632863) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 803547 + ... + 804543.

It is an arithmetic number, because the mean of its divisors is an integer number (29466948).

Almost surely, 2^801632865 is an apocalyptic number.

It is an amenable number.

801632865 is a deficient number, since it is larger than the sum of its proper divisors (612780639).

801632865 is a wasteful number, since it uses less digits than its factorization.

801632865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1470 (or 1459 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 801632865 is about 28313.1217812519. The cubic root of 801632865 is about 928.9489281624.

It can be divided in two parts, 80163 and 2865, that added together give a triangular number (83028 = T₄₀₇).

The spelling of 801632865 in words is "eight hundred one million, six hundred thirty-two thousand, eight hundred sixty-five".