1016608665 has 16 divisors (see below), whose sum is σ = 1641499200. Its totient is φ = 537216192.

The previous prime is 1016608643. The next prime is 1016608759. The reversal of 1016608665 is 5668066101.

It is not a de Polignac number, because 1016608665 - 2¹² = 1016604569 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 309255 + ... + 312524.

It is an arithmetic number, because the mean of its divisors is an integer number (102593700).

Almost surely, 2^1016608665 is an apocalyptic number.

1016608665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1016608665 is a deficient number, since it is larger than the sum of its proper divisors (624890535).

1016608665 is a wasteful number, since it uses less digits than its factorization.

1016608665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621896.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 1016608665 is about 31884.3012311702. The cubic root of 1016608665 is about 1005.5058516290.

The spelling of 1016608665 in words is "one billion, sixteen million, six hundred eight thousand, six hundred sixty-five".