806401887 has 8 divisors (see below), whose sum is σ = 1076672304. Its totient is φ = 536866368.

The previous prime is 806401861. The next prime is 806401891. The reversal of 806401887 is 788104608.

806401887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 806401887 - 2⁶ = 806401823 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (806401807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181158 + ... + 185555.

It is an arithmetic number, because the mean of its divisors is an integer number (134584038).

Almost surely, 2^806401887 is an apocalyptic number.

806401887 is a deficient number, since it is larger than the sum of its proper divisors (270270417).

806401887 is a wasteful number, since it uses less digits than its factorization.

806401887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367449.

The product of its (nonzero) digits is 86016, while the sum is 42.

The square root of 806401887 is about 28397.2161839854. The cubic root of 806401887 is about 930.7874346025.

The spelling of 806401887 in words is "eight hundred six million, four hundred one thousand, eight hundred eighty-seven".