660284416 has 99 divisors (see below), whose sum is σ = 1470972153. Its totient is φ = 296017920.

The previous prime is 660284413. The next prime is 660284419. The reversal of 660284416 is 614482066.

The square root of 660284416 is 25696.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (660284413) and next prime (660284419).

It can be written as a sum of positive squares in only one way, i.e., 374809600 + 285474816 = 19360^2 + 16896^2 .

It is a super-2 number, since 2×660284416² = 871951020024922112, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660284413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 9044956 + ... + 9045028.

Almost surely, 2^660284416 is an apocalyptic number.

660284416 is the 25696-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 660284416

660284416 is an abundant number, since it is smaller than the sum of its proper divisors (810687737).

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

660284416 is an equidigital number, since it uses as much as digits as its factorization.

660284416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The cubic root of 660284416 is about 870.7838164519.

The spelling of 660284416 in words is "six hundred sixty million, two hundred eighty-four thousand, four hundred sixteen".