806714639 has 4 divisors (see below), whose sum is σ = 818755224. Its totient is φ = 794674056.

The previous prime is 806714603. The next prime is 806714641. The reversal of 806714639 is 936417608.

806714639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 806714639 - 2⁸ = 806714383 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 806714639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (806714669) 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, 6020192 + ... + 6020325.

It is an arithmetic number, because the mean of its divisors is an integer number (204688806).

Almost surely, 2^806714639 is an apocalyptic number.

806714639 is a deficient number, since it is larger than the sum of its proper divisors (12040585).

806714639 is a wasteful number, since it uses less digits than its factorization.

806714639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12040584.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 806714639 is about 28402.7223871234. The cubic root of 806714639 is about 930.9077501304.

The spelling of 806714639 in words is "eight hundred six million, seven hundred fourteen thousand, six hundred thirty-nine".