697213423 has 2 divisors, whose sum is σ = 697213424. Its totient is φ = 697213422.

The previous prime is 697213411. The next prime is 697213453. The reversal of 697213423 is 324312796.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 697213423 - 2¹³ = 697205231 is a prime.

It is a super-2 number, since 2×697213423² = 972213114422753858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (697213453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348606711 + 348606712.

It is an arithmetic number, because the mean of its divisors is an integer number (348606712).

Almost surely, 2^697213423 is an apocalyptic number.

697213423 is a deficient number, since it is larger than the sum of its proper divisors (1).

697213423 is an equidigital number, since it uses as much as digits as its factorization.

697213423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 37.

The square root of 697213423 is about 26404.7992418045. The cubic root of 697213423 is about 886.7242382734.

The spelling of 697213423 in words is "six hundred ninety-seven million, two hundred thirteen thousand, four hundred twenty-three".