1660161066 has 16 divisors (see below), whose sum is σ = 3410061024. Its totient is φ = 538430544.

The previous prime is 1660161059. The next prime is 1660161067. The reversal of 1660161066 is 6601610661.

It is a super-2 number, since 2×1660161066² = 5512269530124512712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1660161067) 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 7 ways as a sum of consecutive naturals, for example, 3738880 + ... + 3739323.

It is an arithmetic number, because the mean of its divisors is an integer number (213128814).

Almost surely, 2^1660161066 is an apocalyptic number.

1660161066 is an abundant number, since it is smaller than the sum of its proper divisors (1749899958).

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

1660161066 is a wasteful number, since it uses less digits than its factorization.

1660161066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7478245.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 1660161066 is about 40745.0741317279. The cubic root of 1660161066 is about 1184.0864414648.

The spelling of 1660161066 in words is "one billion, six hundred sixty million, one hundred sixty-one thousand, sixty-six".