161802664 has 16 divisors (see below), whose sum is σ = 303544800. Its totient is φ = 80857392.

The previous prime is 161802659. The next prime is 161802673. The reversal of 161802664 is 466208161.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 14389 + ... + 23035.

It is an arithmetic number, because the mean of its divisors is an integer number (18971550).

Almost surely, 2^161802664 is an apocalyptic number.

It is an amenable number.

161802664 is a deficient number, since it is larger than the sum of its proper divisors (141742136).

161802664 is a wasteful number, since it uses less digits than its factorization.

161802664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10992 (or 10988 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 161802664 is about 12720.1676089586. The cubic root of 161802664 is about 544.9147401907.

The spelling of 161802664 in words is "one hundred sixty-one million, eight hundred two thousand, six hundred sixty-four".