65550489 has 8 divisors (see below), whose sum is σ = 87484992. Its totient is φ = 43658160.

The previous prime is 65550481. The next prime is 65550493. The reversal of 65550489 is 98405556.

65550489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 65550489 - 2³ = 65550481 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65550489.

It is not an unprimeable number, because it can be changed into a prime (65550481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6717 + ... + 13274.

It is an arithmetic number, because the mean of its divisors is an integer number (10935624).

Almost surely, 2^65550489 is an apocalyptic number.

It is an amenable number.

65550489 is a deficient number, since it is larger than the sum of its proper divisors (21934503).

65550489 is a wasteful number, since it uses less digits than its factorization.

65550489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21087.

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

The square root of 65550489 is about 8096.3256480949. The cubic root of 65550489 is about 403.2044456847.

The spelling of 65550489 in words is "sixty-five million, five hundred fifty thousand, four hundred eighty-nine".