697766423 has 2 divisors, whose sum is σ = 697766424. Its totient is φ = 697766422.

The previous prime is 697766417. The next prime is 697766441. The reversal of 697766423 is 324667796.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-697766423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (697766453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348883211 + 348883212.

It is an arithmetic number, because the mean of its divisors is an integer number (348883212).

Almost surely, 2^697766423 is an apocalyptic number.

697766423 is a deficient number, since it is larger than the sum of its proper divisors (1).

697766423 is an equidigital number, since it uses as much as digits as its factorization.

697766423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2286144, while the sum is 50.

The square root of 697766423 is about 26415.2687474498. The cubic root of 697766423 is about 886.9586136220.

The spelling of 697766423 in words is "six hundred ninety-seven million, seven hundred sixty-six thousand, four hundred twenty-three".