662161000 has 64 divisors (see below), whose sum is σ = 1572742080. Its totient is φ = 260884800.

The previous prime is 662160977. The next prime is 662161061. The reversal of 662161000 is 161266.

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 15 ways as a sum of consecutive naturals, for example, 62059 + ... + 71941.

It is an arithmetic number, because the mean of its divisors is an integer number (24574095).

Almost surely, 2^662161000 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 662161000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (786371040).

662161000 is an abundant number, since it is smaller than the sum of its proper divisors (910581080).

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

662161000 is a wasteful number, since it uses less digits than its factorization.

662161000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9971 (or 9957 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 662161000 is about 25732.4891916814. The cubic root of 662161000 is about 871.6079831772.

The spelling of 662161000 in words is "six hundred sixty-two million, one hundred sixty-one thousand".