160720001 has 16 divisors (see below), whose sum is σ = 180398400. Its totient is φ = 142164288.

The previous prime is 160719991. The next prime is 160720003. The reversal of 160720001 is 100027061.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 160720001 - 2²² = 156525697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (160720003) 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, 50870 + ... + 53936.

It is an arithmetic number, because the mean of its divisors is an integer number (11274900).

Almost surely, 2^160720001 is an apocalyptic number.

It is an amenable number.

160720001 is a deficient number, since it is larger than the sum of its proper divisors (19678399).

160720001 is a wasteful number, since it uses less digits than its factorization.

160720001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3248.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 160720001 is about 12677.5392328322. The cubic root of 160720001 is about 543.6966312882.

Adding to 160720001 its reverse (100027061), we get a palindrome (260747062).

The spelling of 160720001 in words is "one hundred sixty million, seven hundred twenty thousand, one".