864028057 has 4 divisors (see below), whose sum is σ = 867834576. Its totient is φ = 860221540.

The previous prime is 864028027. The next prime is 864028069. The reversal of 864028057 is 750820468.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 864028057 - 2²⁷ = 729810329 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (864028007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1902919 + ... + 1903372.

It is an arithmetic number, because the mean of its divisors is an integer number (216958644).

Almost surely, 2^864028057 is an apocalyptic number.

It is an amenable number.

864028057 is a deficient number, since it is larger than the sum of its proper divisors (3806519).

864028057 is a wasteful number, since it uses less digits than its factorization.

864028057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3806518.

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 864028057 is about 29394.3541687855. The cubic root of 864028057 is about 952.4509407247.

The spelling of 864028057 in words is "eight hundred sixty-four million, twenty-eight thousand, fifty-seven".