1020747 has 16 divisors (see below), whose sum is σ = 1675520. Its totient is φ = 538272.

The previous prime is 1020743. The next prime is 1020751. The reversal of 1020747 is 7470201.

It is an interprime number because it is at equal distance from previous prime (1020743) and next prime (1020751).

It is not a de Polignac number, because 1020747 - 2² = 1020743 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1020743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1597 + ... + 2142.

It is an arithmetic number, because the mean of its divisors is an integer number (104720).

2^1020747 is an apocalyptic number.

1020747 is a deficient number, since it is larger than the sum of its proper divisors (654773).

1020747 is a wasteful number, since it uses less digits than its factorization.

1020747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3762.

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 1020747 is about 1010.3202462586. The cubic root of 1020747 is about 100.6868383964.

Adding to 1020747 its reverse (7470201), we get a palindrome (8490948).

The spelling of 1020747 in words is "one million, twenty thousand, seven hundred forty-seven".