70800217 has 2 divisors, whose sum is σ = 70800218. Its totient is φ = 70800216.

The previous prime is 70800193. The next prime is 70800229. The reversal of 70800217 is 71200807.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59969536 + 10830681 = 7744^2 + 3291^2 .

It is a cyclic number.

It is not a de Polignac number, because 70800217 - 2⁷ = 70800089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70800191 and 70800200.

It is not a weakly prime, because it can be changed into another prime (70800017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35400108 + 35400109.

It is an arithmetic number, because the mean of its divisors is an integer number (35400109).

Almost surely, 2^70800217 is an apocalyptic number.

It is an amenable number.

70800217 is a deficient number, since it is larger than the sum of its proper divisors (1).

70800217 is an equidigital number, since it uses as much as digits as its factorization.

70800217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 784, while the sum is 25.

The square root of 70800217 is about 8414.2864819306. The cubic root of 70800217 is about 413.6930227641.

It can be divided in two parts, 70800 and 217, that added together give a palindrome (71017).

The spelling of 70800217 in words is "seventy million, eight hundred thousand, two hundred seventeen".