1045864 has 16 divisors (see below), whose sum is σ = 1972800. Its totient is φ = 519792.

The previous prime is 1045859. The next prime is 1045903. The reversal of 1045864 is 4685401.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1639 + ... + 2185.

It is an arithmetic number, because the mean of its divisors is an integer number (123300).

2^1045864 is an apocalyptic number.

1045864 is the 547-th nonagonal number.

It is an amenable number.

1045864 is a deficient number, since it is larger than the sum of its proper divisors (926936).

1045864 is a wasteful number, since it uses less digits than its factorization.

1045864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792 (or 788 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 1045864 is about 1022.6749239128. The cubic root of 1045864 is about 101.5060056142.

The spelling of 1045864 in words is "one million, forty-five thousand, eight hundred sixty-four".