697386143 has 2 divisors, whose sum is σ = 697386144. Its totient is φ = 697386142.

The previous prime is 697386139. The next prime is 697386149. The reversal of 697386143 is 341683796.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 697386143 - 2² = 697386139 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (697386149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348693071 + 348693072.

It is an arithmetic number, because the mean of its divisors is an integer number (348693072).

Almost surely, 2^697386143 is an apocalyptic number.

697386143 is a deficient number, since it is larger than the sum of its proper divisors (1).

697386143 is an equidigital number, since it uses as much as digits as its factorization.

697386143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 47.

The square root of 697386143 is about 26408.0696568303. The cubic root of 697386143 is about 886.7974546709.

The spelling of 697386143 in words is "six hundred ninety-seven million, three hundred eighty-six thousand, one hundred forty-three".