866101164 has 12 divisors (see below), whose sum is σ = 2020902744. Its totient is φ = 288700384.

The previous prime is 866101139. The next prime is 866101169. The reversal of 866101164 is 461101668.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (866101169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36087537 + ... + 36087560.

It is an arithmetic number, because the mean of its divisors is an integer number (168408562).

Almost surely, 2^866101164 is an apocalyptic number.

It is an amenable number.

866101164 is an abundant number, since it is smaller than the sum of its proper divisors (1154801580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

866101164 is a wasteful number, since it uses less digits than its factorization.

866101164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72175104 (or 72175102 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 866101164 is about 29429.5967352596. The cubic root of 866101164 is about 953.2120871554.

The spelling of 866101164 in words is "eight hundred sixty-six million, one hundred one thousand, one hundred sixty-four".