160664491 has 8 divisors (see below), whose sum is σ = 174968640. Its totient is φ = 146638272.

The previous prime is 160664489. The next prime is 160664507. The reversal of 160664491 is 194466061.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 160664491 - 2¹ = 160664489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 160664491.

It is not an unprimeable number, because it can be changed into a prime (160664411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68275 + ... + 70588.

It is an arithmetic number, because the mean of its divisors is an integer number (21871080).

Almost surely, 2^160664491 is an apocalyptic number.

160664491 is a deficient number, since it is larger than the sum of its proper divisors (14304149).

160664491 is a wasteful number, since it uses less digits than its factorization.

160664491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138965.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 160664491 is about 12675.3497387646. The cubic root of 160664491 is about 543.6340295065.

The spelling of 160664491 in words is "one hundred sixty million, six hundred sixty-four thousand, four hundred ninety-one".