1051687 has 18 divisors (see below), whose sum is σ = 1335168. Its totient is φ = 825552.

The previous prime is 1051663. The next prime is 1051697. The reversal of 1051687 is 7861501.

It is a happy number.

It is not a de Polignac number, because 1051687 - 2⁷ = 1051559 is a prime.

It is a super-2 number, since 2×1051687² = 2212091091938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8218 + ... + 8344.

It is an arithmetic number, because the mean of its divisors is an integer number (74176).

2^1051687 is an apocalyptic number.

1051687 is a deficient number, since it is larger than the sum of its proper divisors (283481).

1051687 is a wasteful number, since it uses less digits than its factorization.

1051687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 1051687 is about 1025.5179179322. The cubic root of 1051687 is about 101.6940402268.

The spelling of 1051687 in words is "one million, fifty-one thousand, six hundred eighty-seven".