866649466 has 8 divisors (see below), whose sum is σ = 1322007840. Its totient is φ = 425980188.

The previous prime is 866649463. The next prime is 866649467. The reversal of 866649466 is 664946668.

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

It is not an unprimeable number, because it can be changed into a prime (866649463) 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, 3672126 + ... + 3672361.

It is an arithmetic number, because the mean of its divisors is an integer number (165250980).

Almost surely, 2^866649466 is an apocalyptic number.

866649466 is a deficient number, since it is larger than the sum of its proper divisors (455358374).

866649466 is a wasteful number, since it uses less digits than its factorization.

866649466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7344548.

The product of its digits is 8957952, while the sum is 55.

The square root of 866649466 is about 29438.9107475124. The cubic root of 866649466 is about 953.4131944715.

The spelling of 866649466 in words is "eight hundred sixty-six million, six hundred forty-nine thousand, four hundred sixty-six".