1137689 has 4 divisors (see below), whose sum is σ = 1300224. Its totient is φ = 975156.

The previous prime is 1137677. The next prime is 1137707. The reversal of 1137689 is 9867311.

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: 9867311 = 2851 ⋅3461.

It is not a de Polignac number, because 1137689 - 2⁴ = 1137673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1137629) 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, 81257 + ... + 81270.

It is an arithmetic number, because the mean of its divisors is an integer number (325056).

2^1137689 is an apocalyptic number.

It is an amenable number.

1137689 is a deficient number, since it is larger than the sum of its proper divisors (162535).

1137689 is an equidigital number, since it uses as much as digits as its factorization.

1137689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162534.

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

The square root of 1137689 is about 1066.6250512715. The cubic root of 1137689 is about 104.3937551008.

The spelling of 1137689 in words is "one million, one hundred thirty-seven thousand, six hundred eighty-nine".