662166428 has 48 divisors (see below), whose sum is σ = 1451084544. Its totient is φ = 256851840.

The previous prime is 662166391. The next prime is 662166433. The reversal of 662166428 is 824661266.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67151 + ... + 76377.

It is an arithmetic number, because the mean of its divisors is an integer number (30230928).

Almost surely, 2^662166428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 662166428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (725542272).

662166428 is an abundant number, since it is smaller than the sum of its proper divisors (788918116).

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

662166428 is a wasteful number, since it uses less digits than its factorization.

662166428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9482 (or 9480 counting only the distinct ones).

The product of its digits is 165888, while the sum is 41.

The square root of 662166428 is about 25732.5946612463. The cubic root of 662166428 is about 871.6103648111.

The spelling of 662166428 in words is "six hundred sixty-two million, one hundred sixty-six thousand, four hundred twenty-eight".