86661730 has 8 divisors (see below), whose sum is σ = 155991132. Its totient is φ = 34664688.

The previous prime is 86661719. The next prime is 86661739. The reversal of 86661730 is 3716668.

It can be written as a sum of positive squares in 2 ways, for example, as 75325041 + 11336689 = 8679^2 + 3367^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 86661730.

It is not an unprimeable number, because it can be changed into a prime (86661739) 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, 4333077 + ... + 4333096.

Almost surely, 2^86661730 is an apocalyptic number.

86661730 is a deficient number, since it is larger than the sum of its proper divisors (69329402).

86661730 is a wasteful number, since it uses less digits than its factorization.

86661730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8666180.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 86661730 is about 9309.2282172047. The cubic root of 86661730 is about 442.5297287101.

The spelling of 86661730 in words is "eighty-six million, six hundred sixty-one thousand, seven hundred thirty".