864158401 has 8 divisors (see below), whose sum is σ = 894912480. Its totient is φ = 833888832.

The previous prime is 864158371. The next prime is 864158411. The reversal of 864158401 is 104851468.

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

It is a cyclic number.

It is not a de Polignac number, because 864158401 - 2¹¹ = 864156353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (864158411) 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, 117496 + ... + 124633.

It is an arithmetic number, because the mean of its divisors is an integer number (111864060).

Almost surely, 2^864158401 is an apocalyptic number.

It is an amenable number.

864158401 is a deficient number, since it is larger than the sum of its proper divisors (30754079).

864158401 is a wasteful number, since it uses less digits than its factorization.

864158401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242255.

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 864158401 is about 29396.5712456402. The cubic root of 864158401 is about 952.4988326970.

The spelling of 864158401 in words is "eight hundred sixty-four million, one hundred fifty-eight thousand, four hundred one".