89660645 has 16 divisors (see below), whose sum is σ = 110702592. Its totient is φ = 69671040.

The previous prime is 89660617. The next prime is 89660651. The reversal of 89660645 is 54606698.

It is not a de Polignac number, because 89660645 - 2⁶ = 89660581 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 89660596 and 89660605.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 53084 + ... + 54746.

It is an arithmetic number, because the mean of its divisors is an integer number (6918912).

Almost surely, 2^89660645 is an apocalyptic number.

It is an amenable number.

89660645 is a deficient number, since it is larger than the sum of its proper divisors (21041947).

89660645 is a wasteful number, since it uses less digits than its factorization.

89660645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1972.

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 89660645 is about 9468.9305098306. The cubic root of 89660645 is about 447.5765107468.

The spelling of 89660645 in words is "eighty-nine million, six hundred sixty thousand, six hundred forty-five".