866601061 has 16 divisors (see below), whose sum is σ = 959990400. Its totient is φ = 778111488.

The previous prime is 866601053. The next prime is 866601089. The reversal of 866601061 is 160106668.

866601061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 866601061 - 2³ = 866601053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866601011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157210 + ... + 162628.

It is an arithmetic number, because the mean of its divisors is an integer number (59999400).

Almost surely, 2^866601061 is an apocalyptic number.

It is an amenable number.

866601061 is a deficient number, since it is larger than the sum of its proper divisors (93389339).

866601061 is a wasteful number, since it uses less digits than its factorization.

866601061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5868.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 866601061 is about 29438.0886098266. The cubic root of 866601061 is about 953.3954438019.

The spelling of 866601061 in words is "eight hundred sixty-six million, six hundred one thousand, sixty-one".