1138697 has 4 divisors (see below), whose sum is σ = 1301376. Its totient is φ = 976020.

The previous prime is 1138681. The next prime is 1138703. The reversal of 1138697 is 7968311.

1138697 is nontrivially palindromic in base 5.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7968311 = 13 ⋅612947.

It is a cyclic number.

It is not a de Polignac number, because 1138697 - 2⁴ = 1138681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1138637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81329 + ... + 81342.

It is an arithmetic number, because the mean of its divisors is an integer number (325344).

2^1138697 is an apocalyptic number.

It is an amenable number.

1138697 is a deficient number, since it is larger than the sum of its proper divisors (162679).

1138697 is an equidigital number, since it uses as much as digits as its factorization.

1138697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162678.

The product of its digits is 9072, while the sum is 35.

The square root of 1138697 is about 1067.0974650893. The cubic root of 1138697 is about 104.4245771862.

The spelling of 1138697 in words is "one million, one hundred thirty-eight thousand, six hundred ninety-seven".