696666697 has 4 divisors (see below), whose sum is σ = 706478976. Its totient is φ = 686854420.

The previous prime is 696666683. The next prime is 696666703. The reversal of 696666697 is 796666696.

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 a de Polignac number, because none of the positive numbers 2^k-696666697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (696666617) 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, 4906033 + ... + 4906174.

It is an arithmetic number, because the mean of its divisors is an integer number (176619744).

Almost surely, 2^696666697 is an apocalyptic number.

It is an amenable number.

696666697 is a deficient number, since it is larger than the sum of its proper divisors (9812279).

696666697 is an equidigital number, since it uses as much as digits as its factorization.

696666697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9812278.

The product of its digits is 26453952, while the sum is 61.

The square root of 696666697 is about 26394.4444343881. Note that the first 4 decimals coincide. The cubic root of 696666697 is about 886.4924001428.

Subtracting 696666697 from its reverse (796666696), we obtain a palindrome (99999999).

The spelling of 696666697 in words is "six hundred ninety-six million, six hundred sixty-six thousand, six hundred ninety-seven".