160531665 has 64 divisors (see below), whose sum is σ = 313866240. Its totient is φ = 68428800.

The previous prime is 160531661. The next prime is 160531667. The reversal of 160531665 is 566135061.

It is not a de Polignac number, because 160531665 - 2² = 160531661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (160531661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 133065 + ... + 134265.

It is an arithmetic number, because the mean of its divisors is an integer number (4904160).

Almost surely, 2^160531665 is an apocalyptic number.

160531665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

160531665 is a deficient number, since it is larger than the sum of its proper divisors (153334575).

160531665 is a wasteful number, since it uses less digits than its factorization.

160531665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1302.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 160531665 is about 12670.1091155522. The cubic root of 160531665 is about 543.4841755233.

The spelling of 160531665 in words is "one hundred sixty million, five hundred thirty-one thousand, six hundred sixty-five".