866134945 has 16 divisors (see below), whose sum is σ = 1119928320. Its totient is φ = 639255744.

The previous prime is 866134901. The next prime is 866134949. The reversal of 866134945 is 549431668.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-866134945 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 866134895 and 866134904.

It is not an unprimeable number, because it can be changed into a prime (866134949) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 216352 + ... + 220318.

It is an arithmetic number, because the mean of its divisors is an integer number (69995520).

Almost surely, 2^866134945 is an apocalyptic number.

It is an amenable number.

866134945 is a deficient number, since it is larger than the sum of its proper divisors (253793375).

866134945 is a wasteful number, since it uses less digits than its factorization.

866134945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7344.

The product of its digits is 622080, while the sum is 46.

The square root of 866134945 is about 29430.1706586965. The cubic root of 866134945 is about 953.2244798720.

The spelling of 866134945 in words is "eight hundred sixty-six million, one hundred thirty-four thousand, nine hundred forty-five".