864351321 has 8 divisors (see below), whose sum is σ = 1152614784. Its totient is φ = 576161040.

The previous prime is 864351307. The next prime is 864351337. The reversal of 864351321 is 123153468.

864351321 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 864351321 - 2⁵ = 864351289 is a prime.

It is a super-2 number, since 2×864351321² = 1494206412228890082, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (864351391) 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, 21855 + ... + 46971.

It is an arithmetic number, because the mean of its divisors is an integer number (144076848).

Almost surely, 2^864351321 is an apocalyptic number.

It is an amenable number.

864351321 is a deficient number, since it is larger than the sum of its proper divisors (288263463).

864351321 is a wasteful number, since it uses less digits than its factorization.

864351321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36591.

The product of its digits is 17280, while the sum is 33.

The square root of 864351321 is about 29399.8523975887. The cubic root of 864351321 is about 952.5697079756.

The spelling of 864351321 in words is "eight hundred sixty-four million, three hundred fifty-one thousand, three hundred twenty-one".