798161897 has 4 divisors (see below), whose sum is σ = 859558980. Its totient is φ = 736764816.

The previous prime is 798161813. The next prime is 798161911.

798161897 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 147962896 + 650199001 = 12164^2 + 25499^2 .

It is a cyclic number.

It is not a de Polignac number, because 798161897 - 2⁸ = 798161641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (798164897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30698522 + ... + 30698547.

It is an arithmetic number, because the mean of its divisors is an integer number (214889745).

Almost surely, 2^798161897 is an apocalyptic number.

It is an amenable number.

798161897 is a deficient number, since it is larger than the sum of its proper divisors (61397083).

798161897 is a wasteful number, since it uses less digits than its factorization.

798161897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61397082.

The product of its digits is 1524096, while the sum is 56.

The square root of 798161897 is about 28251.7591841641. The cubic root of 798161897 is about 927.6062449764.

The spelling of 798161897 in words is "seven hundred ninety-eight million, one hundred sixty-one thousand, eight hundred ninety-seven".