102066489 has 12 divisors (see below), whose sum is σ = 168490816. Its totient is φ = 58323672.

The previous prime is 102066463. The next prime is 102066491. The reversal of 102066489 is 984660201.

102066489 is a `hidden beast` number, since 1 + 0 + 2 + 0 + 6 + 648 + 9 = 666.

It is not a de Polignac number, because 102066489 - 2⁷ = 102066361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102066409) 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 11 ways as a sum of consecutive naturals, for example, 809989 + ... + 810114.

Almost surely, 2^102066489 is an apocalyptic number.

It is an amenable number.

102066489 is a deficient number, since it is larger than the sum of its proper divisors (66424327).

102066489 is a wasteful number, since it uses less digits than its factorization.

102066489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620116 (or 1620113 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 102066489 is about 10102.7960981107. The cubic root of 102066489 is about 467.3343731584.

The spelling of 102066489 in words is "one hundred two million, sixty-six thousand, four hundred eighty-nine".