697856323 has 2 divisors, whose sum is σ = 697856324. Its totient is φ = 697856322.

The previous prime is 697856303. The next prime is 697856399. The reversal of 697856323 is 323658796.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 697856323 - 2²¹ = 695759171 is a prime.

It is not a weakly prime, because it can be changed into another prime (697856303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348928161 + 348928162.

It is an arithmetic number, because the mean of its divisors is an integer number (348928162).

Almost surely, 2^697856323 is an apocalyptic number.

697856323 is a deficient number, since it is larger than the sum of its proper divisors (1).

697856323 is an equidigital number, since it uses as much as digits as its factorization.

697856323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 49.

The square root of 697856323 is about 26416.9703599788. The cubic root of 697856323 is about 886.9967038064.

The spelling of 697856323 in words is "six hundred ninety-seven million, eight hundred fifty-six thousand, three hundred twenty-three".