864158670 has 96 divisors (see below), whose sum is σ = 2301504192. Its totient is φ = 224902656.

The previous prime is 864158657. The next prime is 864158677. The reversal of 864158670 is 76851468.

It is a happy number.

864158670 is a `hidden beast` number, since 8 + 64 + 1 + 586 + 7 + 0 = 666.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864158677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 676072 + ... + 677348.

It is an arithmetic number, because the mean of its divisors is an integer number (23974002).

Almost surely, 2^864158670 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 864158670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1150752096).

864158670 is an abundant number, since it is smaller than the sum of its proper divisors (1437345522).

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

864158670 is a wasteful number, since it uses less digits than its factorization.

864158670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1466 (or 1463 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 864158670 is about 29396.5758210034. The cubic root of 864158670 is about 952.4989315300.

The spelling of 864158670 in words is "eight hundred sixty-four million, one hundred fifty-eight thousand, six hundred seventy".