89644587557 has 8 divisors (see below), whose sum is σ = 102470018496. Its totient is φ = 76823921952.

The previous prime is 89644587547. The next prime is 89644587619. The reversal of 89644587557 is 75578544698.

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

It is a cyclic number.

It is not a de Polignac number, because 89644587557 - 2¹⁰ = 89644586533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89644587547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1150928 + ... + 1226345.

It is an arithmetic number, because the mean of its divisors is an integer number (12808752312).

Almost surely, 2^89644587557 is an apocalyptic number.

It is an amenable number.

89644587557 is a deficient number, since it is larger than the sum of its proper divisors (12825430939).

89644587557 is a wasteful number, since it uses less digits than its factorization.

89644587557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2382667.

The product of its digits is 338688000, while the sum is 68.

The spelling of 89644587557 in words is "eighty-nine billion, six hundred forty-four million, five hundred eighty-seven thousand, five hundred fifty-seven".