69775897 has 2 divisors, whose sum is σ = 69775898. Its totient is φ = 69775896.

The previous prime is 69775861. The next prime is 69775921. The reversal of 69775897 is 79857796.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51423241 + 18352656 = 7171^2 + 4284^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69775897 is a prime.

It is not a weakly prime, because it can be changed into another prime (69775817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34887948 + 34887949.

It is an arithmetic number, because the mean of its divisors is an integer number (34887949).

Almost surely, 2^69775897 is an apocalyptic number.

It is an amenable number.

69775897 is a deficient number, since it is larger than the sum of its proper divisors (1).

69775897 is an equidigital number, since it uses as much as digits as its factorization.

69775897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6667920, while the sum is 58.

The square root of 69775897 is about 8353.1968131967. The cubic root of 69775897 is about 411.6882538977.

The spelling of 69775897 in words is "sixty-nine million, seven hundred seventy-five thousand, eight hundred ninety-seven".