666284262 has 48 divisors (see below), whose sum is σ = 1569807360. Its totient is φ = 187950672.

The previous prime is 666284233. The next prime is 666284279. The reversal of 666284262 is 262482666.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8883 + ... + 37569.

It is an arithmetic number, because the mean of its divisors is an integer number (32704320).

Almost surely, 2^666284262 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 666284262, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (784903680).

666284262 is an abundant number, since it is smaller than the sum of its proper divisors (903523098).

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

666284262 is a wasteful number, since it uses less digits than its factorization.

666284262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28785 (or 28778 counting only the distinct ones).

The product of its digits is 331776, while the sum is 42.

The square root of 666284262 is about 25812.4826779603. The cubic root of 666284262 is about 873.4134021663.

The spelling of 666284262 in words is "six hundred sixty-six million, two hundred eighty-four thousand, two hundred sixty-two".