64026139 has 8 divisors (see below), whose sum is σ = 65231712. Its totient is φ = 62832000.

The previous prime is 64026121. The next prime is 64026187. The reversal of 64026139 is 93162046.

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 64026139 - 2⁵ = 64026107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64026139.

It is not an unprimeable number, because it can be changed into a prime (64026239) 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, 8889 + ... + 14389.

It is an arithmetic number, because the mean of its divisors is an integer number (8153964).

Almost surely, 2^64026139 is an apocalyptic number.

64026139 is a deficient number, since it is larger than the sum of its proper divisors (1205573).

64026139 is a wasteful number, since it uses less digits than its factorization.

64026139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5717.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 64026139 is about 8001.6335207256. The cubic root of 64026139 is about 400.0544488380.

The spelling of 64026139 in words is "sixty-four million, twenty-six thousand, one hundred thirty-nine".