64097889 has 16 divisors (see below), whose sum is σ = 86780160. Its totient is φ = 42078080.

The previous prime is 64097857. The next prime is 64097899. The reversal of 64097889 is 98879046.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 64097889 - 2⁵ = 64097857 is a prime.

It is a super-3 number, since 3×64097889³ (a number of 24 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64097899) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114799 + ... + 115355.

It is an arithmetic number, because the mean of its divisors is an integer number (5423760).

Almost surely, 2^64097889 is an apocalyptic number.

It is an amenable number.

64097889 is a deficient number, since it is larger than the sum of its proper divisors (22682271).

64097889 is a wasteful number, since it uses less digits than its factorization.

64097889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080.

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 64097889 is about 8006.1157248693. The cubic root of 64097889 is about 400.2038315308.

The spelling of 64097889 in words is "sixty-four million, ninety-seven thousand, eight hundred eighty-nine".