64104889 has 4 divisors (see below), whose sum is σ = 64122256. Its totient is φ = 64087524.

The previous prime is 64104883. The next prime is 64104913. The reversal of 64104889 is 98840146.

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, and also an emirpimes, since its reverse is a distinct semiprime: 98840146 = 2 ⋅49420073.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64104889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64104883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 699 + ... + 11344.

It is an arithmetic number, because the mean of its divisors is an integer number (16030564).

Almost surely, 2^64104889 is an apocalyptic number.

It is an amenable number.

64104889 is a deficient number, since it is larger than the sum of its proper divisors (17367).

64104889 is a wasteful number, since it uses less digits than its factorization.

64104889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17366.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 64104889 is about 8006.5528787363. The cubic root of 64104889 is about 400.2183994825.

The spelling of 64104889 in words is "sixty-four million, one hundred four thousand, eight hundred eighty-nine".