1045681 has 8 divisors (see below), whose sum is σ = 1287104. Its totient is φ = 827280.

The previous prime is 1045679. The next prime is 1045691. The reversal of 1045681 is 1865401.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1045681 - 2¹ = 1045679 is a prime.

It is a super-2 number, since 2×1045681² = 2186897507522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1045621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5655 + ... + 5836.

It is an arithmetic number, because the mean of its divisors is an integer number (160888).

2^1045681 is an apocalyptic number.

It is an amenable number.

1045681 is a deficient number, since it is larger than the sum of its proper divisors (241423).

1045681 is a wasteful number, since it uses less digits than its factorization.

1045681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11511.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 1045681 is about 1022.5854487523. The cubic root of 1045681 is about 101.5000849328.

The spelling of 1045681 in words is "one million, forty-five thousand, six hundred eighty-one".