1045687 has 4 divisors (see below), whose sum is σ = 1107216. Its totient is φ = 984160.

The previous prime is 1045679. The next prime is 1045691. The reversal of 1045687 is 7865401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7865401 = 61 ⋅128941.

It is a cyclic number.

It is not a de Polignac number, because 1045687 - 2³ = 1045679 is a prime.

It is a super-2 number, since 2×1045687² = 2186922603938, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045607) 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, 30739 + ... + 30772.

It is an arithmetic number, because the mean of its divisors is an integer number (276804).

2^1045687 is an apocalyptic number.

1045687 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1045687 is a deficient number, since it is larger than the sum of its proper divisors (61529).

1045687 is an equidigital number, since it uses as much as digits as its factorization.

1045687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61528.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 1045687 is about 1022.5883824883. The cubic root of 1045687 is about 101.5002790645.

The spelling of 1045687 in words is "one million, forty-five thousand, six hundred eighty-seven".