660830412 has 48 divisors (see below), whose sum is σ = 1770652800. Its totient is φ = 189711360.

The previous prime is 660830389. The next prime is 660830413. The reversal of 660830412 is 214038066.

It is a self number, because there is not a number n which added to its sum of digits gives 660830412.

It is not an unprimeable number, because it can be changed into a prime (660830413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129237 + ... + 134252.

It is an arithmetic number, because the mean of its divisors is an integer number (36888600).

Almost surely, 2^660830412 is an apocalyptic number.

It is an amenable number.

660830412 is an abundant number, since it is smaller than the sum of its proper divisors (1109822388).

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

660830412 is a wasteful number, since it uses less digits than its factorization.

660830412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263526 (or 263524 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 660830412 is about 25706.6219484397. The cubic root of 660830412 is about 871.0237703664.

Adding to 660830412 its reverse (214038066), we get a palindrome (874868478).

The spelling of 660830412 in words is "six hundred sixty million, eight hundred thirty thousand, four hundred twelve".