2564089639 has 8 divisors (see below), whose sum is σ = 2649526272. Its totient is φ = 2478823320.

The previous prime is 2564089609. The next prime is 2564089663. The reversal of 2564089639 is 9369804652.

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 2564089639 - 2⁷ = 2564089511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2564089609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11599 + ... + 72544.

It is an arithmetic number, because the mean of its divisors is an integer number (331190784).

Almost surely, 2^2564089639 is an apocalyptic number.

2564089639 is a deficient number, since it is larger than the sum of its proper divisors (85436633).

2564089639 is an equidigital number, since it uses as much as digits as its factorization.

2564089639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85157.

The product of its (nonzero) digits is 2799360, while the sum is 52.

The square root of 2564089639 is about 50636.8407288606. The cubic root of 2564089639 is about 1368.7088264784.

The spelling of 2564089639 in words is "two billion, five hundred sixty-four million, eighty-nine thousand, six hundred thirty-nine".