1660630216 has 32 divisors (see below), whose sum is σ = 3645290880. Its totient is φ = 694339200.

The previous prime is 1660630211. The next prime is 1660630241. The reversal of 1660630216 is 6120360661.

It is not an unprimeable number, because it can be changed into a prime (1660630211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359340 + ... + 363931.

It is an arithmetic number, because the mean of its divisors is an integer number (113915340).

Almost surely, 2^1660630216 is an apocalyptic number.

It is an amenable number.

1660630216 is an abundant number, since it is smaller than the sum of its proper divisors (1984660664).

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

1660630216 is a wasteful number, since it uses less digits than its factorization.

1660630216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723325 (or 723321 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 1660630216 is about 40750.8308626953. The cubic root of 1660630216 is about 1184.1979691645.

Adding to 1660630216 its reverse (6120360661), we get a palindrome (7780990877).

The spelling of 1660630216 in words is "one billion, six hundred sixty million, six hundred thirty thousand, two hundred sixteen".