696655903897 has 2 divisors, whose sum is σ = 696655903898. Its totient is φ = 696655903896.

The previous prime is 696655903873. The next prime is 696655903943. The reversal of 696655903897 is 798309556696.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 359842817161 + 336813086736 = 599869^2 + 580356^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-696655903897 is a prime.

It is not a weakly prime, because it can be changed into another prime (696655943897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348327951948 + 348327951949.

It is an arithmetic number, because the mean of its divisors is an integer number (348327951949).

Almost surely, 2^696655903897 is an apocalyptic number.

It is an amenable number.

696655903897 is a deficient number, since it is larger than the sum of its proper divisors (1).

696655903897 is an equidigital number, since it uses as much as digits as its factorization.

696655903897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 661348800, while the sum is 73.

The spelling of 696655903897 in words is "six hundred ninety-six billion, six hundred fifty-five million, nine hundred three thousand, eight hundred ninety-seven".