1040647 has 4 divisors (see below), whose sum is σ = 1055376. Its totient is φ = 1025920.

The previous prime is 1040629. The next prime is 1040651. The reversal of 1040647 is 7460401.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1040647 - 2¹¹ = 1038599 is a prime.

It is a Duffinian number.

1040647 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7258 + ... + 7399.

It is an arithmetic number, because the mean of its divisors is an integer number (263844).

2^1040647 is an apocalyptic number.

1040647 is a deficient number, since it is larger than the sum of its proper divisors (14729).

1040647 is an equidigital number, since it uses as much as digits as its factorization.

1040647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14728.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 1040647 is about 1020.1210712460. The cubic root of 1040647 is about 101.3369460950.

The spelling of 1040647 in words is "one million, forty thousand, six hundred forty-seven".