1143697 has 2 divisors, whose sum is σ = 1143698. Its totient is φ = 1143696.

The previous prime is 1143679. The next prime is 1143719. The reversal of 1143697 is 7963411.

It is a happy number.

Together with previous prime (1143679) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1115136 + 28561 = 1056^2 + 169^2 .

It is an emirp because it is prime and its reverse (7963411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1143697 - 2¹¹ = 1141649 is a prime.

It is a Chen prime.

It is equal to p₈₈₈₆₁ and since 1143697 and 88861 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (1143647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571848 + 571849.

It is an arithmetic number, because the mean of its divisors is an integer number (571849).

2^1143697 is an apocalyptic number.

It is an amenable number.

1143697 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143697 is an equidigital number, since it uses as much as digits as its factorization.

1143697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 31.

The square root of 1143697 is about 1069.4377027205. The cubic root of 1143697 is about 104.5771962276.

The spelling of 1143697 in words is "one million, one hundred forty-three thousand, six hundred ninety-seven".