8600661 has 10 divisors (see below), whose sum is σ = 12848022. Its totient is φ = 5733720.

The previous prime is 8600639. The next prime is 8600677. The reversal of 8600661 is 1660068.

8600661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 5062500 + 3538161 = 2250^2 + 1881^2 .

It is not a de Polignac number, because 8600661 - 2⁵ = 8600629 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8600621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 53010 + ... + 53171.

Almost surely, 2^8600661 is an apocalyptic number.

8600661 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

8600661 is a deficient number, since it is larger than the sum of its proper divisors (4247361).

8600661 is a wasteful number, since it uses less digits than its factorization.

8600661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106193 (or 106184 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 8600661 is about 2932.6883571222. The cubic root of 8600661 is about 204.8852103737.

It can be divided in two parts, 8600 and 661, that added together give a cube (9261 = 21³).

The spelling of 8600661 in words is "eight million, six hundred thousand, six hundred sixty-one".