89543687 has 4 divisors (see below), whose sum is σ = 89679816. Its totient is φ = 89407560.

The previous prime is 89543633. The next prime is 89543693. The reversal of 89543687 is 78634598.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 89543687 - 2²⁶ = 22434823 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 (89543087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67073 + ... + 68394.

It is an arithmetic number, because the mean of its divisors is an integer number (22419954).

Almost surely, 2^89543687 is an apocalyptic number.

89543687 is a deficient number, since it is larger than the sum of its proper divisors (136129).

89543687 is a wasteful number, since it uses less digits than its factorization.

89543687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136128.

The product of its digits is 1451520, while the sum is 50.

The square root of 89543687 is about 9462.7526122160. The cubic root of 89543687 is about 447.3818120518.

The spelling of 89543687 in words is "eighty-nine million, five hundred forty-three thousand, six hundred eighty-seven".