160666665 has 16 divisors (see below), whose sum is σ = 257717376. Its totient is φ = 85472000.

The previous prime is 160666663. The next prime is 160666697. The reversal of 160666665 is 566666061.

It is not a de Polignac number, because 160666665 - 2¹ = 160666663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (160666663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7341 + ... + 19370.

It is an arithmetic number, because the mean of its divisors is an integer number (16107336).

Almost surely, 2^160666665 is an apocalyptic number.

160666665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

160666665 is a deficient number, since it is larger than the sum of its proper divisors (97050711).

160666665 is a wasteful number, since it uses less digits than its factorization.

160666665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27120.

The product of its (nonzero) digits is 233280, while the sum is 42.

The square root of 160666665 is about 12675.4354954771. The cubic root of 160666665 is about 543.6364815211.

The spelling of 160666665 in words is "one hundred sixty million, six hundred sixty-six thousand, six hundred sixty-five".