8642466 has 48 divisors (see below), whose sum is σ = 21625344. Its totient is φ = 2443392.

The previous prime is 8642453. The next prime is 8642467. The reversal of 8642466 is 6642468.

It is a happy number.

8642466 is a `hidden beast` number, since 8 + 642 + 4 + 6 + 6 = 666.

It is a super-2 number, since 2×8642466² = 149384437122312, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8642466.

It is not an unprimeable number, because it can be changed into a prime (8642467) 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 23 ways as a sum of consecutive naturals, for example, 13935 + ... + 14541.

It is an arithmetic number, because the mean of its divisors is an integer number (450528).

Almost surely, 2^8642466 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8642466, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10812672).

8642466 is an abundant number, since it is smaller than the sum of its proper divisors (12982878).

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

8642466 is a wasteful number, since it uses less digits than its factorization.

8642466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735 (or 732 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 8642466 is about 2939.8071365312. The cubic root of 8642466 is about 205.2166339696.

The spelling of 8642466 in words is "eight million, six hundred forty-two thousand, four hundred sixty-six".