806866470 has 96 divisors (see below), whose sum is σ = 2158228800. Its totient is φ = 209018880.

The previous prime is 806866441. The next prime is 806866471. The reversal of 806866470 is 74668608.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (806866471) 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, 1656567 + ... + 1657053.

It is an arithmetic number, because the mean of its divisors is an integer number (22481550).

Almost surely, 2^806866470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 806866470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1079114400).

806866470 is an abundant number, since it is smaller than the sum of its proper divisors (1351362330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

806866470 is a wasteful number, since it uses less digits than its factorization.

806866470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990 (or 987 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 806866470 is about 28405.3950861452. The cubic root of 806866470 is about 930.9661482229.

The spelling of 806866470 in words is "eight hundred six million, eight hundred sixty-six thousand, four hundred seventy".