89666547508 has 12 divisors (see below), whose sum is σ = 156941264452. Its totient is φ = 44826186240.

The previous prime is 89666547497. The next prime is 89666547527. The reversal of 89666547508 is 80574566698.

It can be written as a sum of positive squares in 2 ways, for example, as 56783077264 + 32883470244 = 238292^2 + 181338^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 89666547508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1743363 + ... + 1794058.

Almost surely, 2^89666547508 is an apocalyptic number.

It is an amenable number.

89666547508 is a deficient number, since it is larger than the sum of its proper divisors (67274716944).

89666547508 is a wasteful number, since it uses less digits than its factorization.

89666547508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3543762 (or 3543760 counting only the distinct ones).

The product of its (nonzero) digits is 87091200, while the sum is 64.

The spelling of 89666547508 in words is "eighty-nine billion, six hundred sixty-six million, five hundred forty-seven thousand, five hundred eight".