801645331 has 4 divisors (see below), whose sum is σ = 815232600. Its totient is φ = 788058064.

The previous prime is 801645329. The next prime is 801645349. The reversal of 801645331 is 133546108.

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

It is a cyclic number.

It is not a de Polignac number, because 801645331 - 2¹ = 801645329 is a prime.

It is a super-2 number, since 2×801645331² = 1285270473428199122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 801645293 and 801645302.

It is not an unprimeable number, because it can be changed into a prime (801645731) 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, 6793546 + ... + 6793663.

It is an arithmetic number, because the mean of its divisors is an integer number (203808150).

Almost surely, 2^801645331 is an apocalyptic number.

801645331 is a deficient number, since it is larger than the sum of its proper divisors (13587269).

801645331 is a wasteful number, since it uses less digits than its factorization.

801645331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13587268.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 801645331 is about 28313.3419256717. The cubic root of 801645331 is about 928.9537434246.

The spelling of 801645331 in words is "eight hundred one million, six hundred forty-five thousand, three hundred thirty-one".