660530416 has 60 divisors (see below), whose sum is σ = 1583810832. Its totient is φ = 261301248.

The previous prime is 660530411. The next prime is 660530417. The reversal of 660530416 is 614035066.

It is a super-2 number, since 2×660530416² = 872600860922266112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660530411) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1480 + ... + 36376.

Almost surely, 2^660530416 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 660530416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (791905416).

660530416 is an abundant number, since it is smaller than the sum of its proper divisors (923280416).

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

660530416 is a wasteful number, since it uses less digits than its factorization.

660530416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34938 (or 34919 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 660530416 is about 25700.7862914737. The cubic root of 660530416 is about 870.8919447152.

The spelling of 660530416 in words is "six hundred sixty million, five hundred thirty thousand, four hundred sixteen".