160420817 has 2 divisors, whose sum is σ = 160420818. Its totient is φ = 160420816.

The previous prime is 160420807. The next prime is 160420829. The reversal of 160420817 is 718024061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158860816 + 1560001 = 12604^2 + 1249^2 .

It is an emirp because it is prime and its reverse (718024061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 160420817 - 2²⁴ = 143643601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 160420817.

It is not a weakly prime, because it can be changed into another prime (160420807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80210408 + 80210409.

It is an arithmetic number, because the mean of its divisors is an integer number (80210409).

Almost surely, 2^160420817 is an apocalyptic number.

It is an amenable number.

160420817 is a deficient number, since it is larger than the sum of its proper divisors (1).

160420817 is an equidigital number, since it uses as much as digits as its factorization.

160420817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 160420817 is about 12665.7339700469. The cubic root of 160420817 is about 543.3590537797.

Adding to 160420817 its reverse (718024061), we get a palindrome (878444878).

The spelling of 160420817 in words is "one hundred sixty million, four hundred twenty thousand, eight hundred seventeen".