86661530 has 8 divisors (see below), whose sum is σ = 155990772. Its totient is φ = 34664608.

The previous prime is 86661521. The next prime is 86661551. The reversal of 86661530 is 3516668.

It can be written as a sum of positive squares in 2 ways, for example, as 84033889 + 2627641 = 9167^2 + 1621^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 4333067 + ... + 4333086.

Almost surely, 2^86661530 is an apocalyptic number.

86661530 is a deficient number, since it is larger than the sum of its proper divisors (69329242).

86661530 is a wasteful number, since it uses less digits than its factorization.

86661530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8666160.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 86661530 is about 9309.2174751694. The cubic root of 86661530 is about 442.5293882830.

The spelling of 86661530 in words is "eighty-six million, six hundred sixty-one thousand, five hundred thirty".