70998197 has 2 divisors, whose sum is σ = 70998198. Its totient is φ = 70998196.

The previous prime is 70998167. The next prime is 70998211. The reversal of 70998197 is 79189907.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42172036 + 28826161 = 6494^2 + 5369^2 .

It is an emirp because it is prime and its reverse (79189907) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70998197 - 2⁶ = 70998133 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70998157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35499098 + 35499099.

It is an arithmetic number, because the mean of its divisors is an integer number (35499099).

Almost surely, 2^70998197 is an apocalyptic number.

It is an amenable number.

70998197 is a deficient number, since it is larger than the sum of its proper divisors (1).

70998197 is an equidigital number, since it uses as much as digits as its factorization.

70998197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 285768, while the sum is 50.

The square root of 70998197 is about 8426.0427841306. The cubic root of 70998197 is about 414.0782697979.

The spelling of 70998197 in words is "seventy million, nine hundred ninety-eight thousand, one hundred ninety-seven".