806133639 has 4 divisors (see below), whose sum is σ = 1074844856. Its totient is φ = 537422424.

The previous prime is 806133631. The next prime is 806133649. The reversal of 806133639 is 936331608.

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

It is not a de Polignac number, because 806133639 - 2³ = 806133631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 806133597 and 806133606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (806133631) 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, 134355604 + ... + 134355609.

It is an arithmetic number, because the mean of its divisors is an integer number (268711214).

Almost surely, 2^806133639 is an apocalyptic number.

806133639 is a deficient number, since it is larger than the sum of its proper divisors (268711217).

806133639 is a wasteful number, since it uses less digits than its factorization.

806133639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268711216.

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 806133639 is about 28392.4926521079. The cubic root of 806133639 is about 930.6842149539.

The spelling of 806133639 in words is "eight hundred six million, one hundred thirty-three thousand, six hundred thirty-nine".