1660051617 has 16 divisors (see below), whose sum is σ = 2538613632. Its totient is φ = 945221760.

The previous prime is 1660051577. The next prime is 1660051633. The reversal of 1660051617 is 7161500661.

It is not a de Polignac number, because 1660051617 - 2¹⁰ = 1660050593 is a prime.

It is a super-2 number, since 2×1660051617² = 5511542742208629378, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1660051667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134758 + ... + 146559.

It is an arithmetic number, because the mean of its divisors is an integer number (158663352).

Almost surely, 2^1660051617 is an apocalyptic number.

It is an amenable number.

1660051617 is a deficient number, since it is larger than the sum of its proper divisors (878562015).

1660051617 is a wasteful number, since it uses less digits than its factorization.

1660051617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281608.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 1660051617 is about 40743.7310147218. The cubic root of 1660051617 is about 1184.0604199083.

The spelling of 1660051617 in words is "one billion, six hundred sixty million, fifty-one thousand, six hundred seventeen".