89684657487 has 32 divisors (see below), whose sum is σ = 136208328960. Its totient is φ = 58290956640.

The previous prime is 89684657473. The next prime is 89684657501. The reversal of 89684657487 is 78475648698.

89684657487 is a `hidden beast` number, since 8 + 9 + 6 + 8 + 46 + 574 + 8 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (89684657473) and next prime (89684657501).

It is not a de Polignac number, because 89684657487 - 2³⁰ = 88610915663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89684657407) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 556708 + ... + 699494.

It is an arithmetic number, because the mean of its divisors is an integer number (4256510280).

Almost surely, 2^89684657487 is an apocalyptic number.

89684657487 is a deficient number, since it is larger than the sum of its proper divisors (46523671473).

89684657487 is a wasteful number, since it uses less digits than its factorization.

89684657487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143380 (or 143374 counting only the distinct ones).

The product of its digits is 650280960, while the sum is 72.

The spelling of 89684657487 in words is "eighty-nine billion, six hundred eighty-four million, six hundred fifty-seven thousand, four hundred eighty-seven".