69696857 has 4 divisors (see below), whose sum is σ = 69738240. Its totient is φ = 69655476.

The previous prime is 69696839. The next prime is 69696859. The reversal of 69696857 is 75869696.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 69696857 - 2¹⁰ = 69695833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69696859) 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, 18053 + ... + 21570.

It is an arithmetic number, because the mean of its divisors is an integer number (17434560).

Almost surely, 2^69696857 is an apocalyptic number.

It is an amenable number.

69696857 is a deficient number, since it is larger than the sum of its proper divisors (41383).

69696857 is a wasteful number, since it uses less digits than its factorization.

69696857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41382.

The product of its digits is 4898880, while the sum is 56.

The square root of 69696857 is about 8348.4643498071. The cubic root of 69696857 is about 411.5327458812.

The spelling of 69696857 in words is "sixty-nine million, six hundred ninety-six thousand, eight hundred fifty-seven".