69697 has 2 divisors, whose sum is σ = 69698. Its totient is φ = 69696.

The previous prime is 69691. The next prime is 69709. The reversal of 69697 is 79696.

69697 is nontrivially palindromic in base 3.

It is a Cunningham number, because it is equal to 264²+1.

69697 is an esthetic number in base 8, because in such base its adjacent digits differ by 1.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69696 + 1 = 264^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 69697 - 2¹⁵ = 36929 is a prime.

It is not a weakly prime, because it can be changed into another prime (69691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34848 + 34849.

It is an arithmetic number, because the mean of its divisors is an integer number (34849).

2⁶⁹⁶⁹⁷ is an apocalyptic number.

It is an amenable number.

69697 is a deficient number, since it is larger than the sum of its proper divisors (1).

69697 is an equidigital number, since it uses as much as digits as its factorization.

69697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 37.

The square root of 69697 is about 264.0018939326. The cubic root of 69697 is about 41.1533027334.

Adding to 69697 its product of digits (20412), we get a palindrome (90109).

Subtracting 69697 from its reverse (79696), we obtain a palindrome (9999).

The spelling of 69697 in words is "sixty-nine thousand, six hundred ninety-seven".