64555089 has 8 divisors (see below), whose sum is σ = 89815872. Its totient is φ = 41165520.

The previous prime is 64555081. The next prime is 64555109. The reversal of 64555089 is 98055546.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64555089 - 2³ = 64555081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64555089.

It is not an unprimeable number, because it can be changed into a prime (64555081) 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 7 ways as a sum of consecutive naturals, for example, 467722 + ... + 467859.

It is an arithmetic number, because the mean of its divisors is an integer number (11226984).

Almost surely, 2^64555089 is an apocalyptic number.

64555089 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

It is an amenable number.

64555089 is a deficient number, since it is larger than the sum of its proper divisors (25260783).

64555089 is a wasteful number, since it uses less digits than its factorization.

64555089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935607.

The product of its (nonzero) digits is 216000, while the sum is 42.

The square root of 64555089 is about 8034.6181614312. The cubic root of 64555089 is about 401.1531080768.

The spelling of 64555089 in words is "sixty-four million, five hundred fifty-five thousand, eighty-nine".