697635697 has 4 divisors (see below), whose sum is σ = 761057136. Its totient is φ = 634214260.

The previous prime is 697635683. The next prime is 697635707. The reversal of 697635697 is 796536796.

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-697635697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (697635677) 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, 31710703 + ... + 31710724.

It is an arithmetic number, because the mean of its divisors is an integer number (190264284).

Almost surely, 2^697635697 is an apocalyptic number.

It is an amenable number.

697635697 is a deficient number, since it is larger than the sum of its proper divisors (63421439).

697635697 is a wasteful number, since it uses less digits than its factorization.

697635697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63421438.

The product of its digits is 12859560, while the sum is 58.

The square root of 697635697 is about 26412.7941914520. The cubic root of 697635697 is about 886.9032198256.

The spelling of 697635697 in words is "six hundred ninety-seven million, six hundred thirty-five thousand, six hundred ninety-seven".