1020634 has 8 divisors (see below), whose sum is σ = 1547028. Its totient is φ = 504960.

The previous prime is 1020631. The next prime is 1020667. The reversal of 1020634 is 4360201.

It can be written as a sum of positive squares in 2 ways, for example, as 1010025 + 10609 = 1005^2 + 103^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1020631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2437 + ... + 2824.

2^1020634 is an apocalyptic number.

1020634 is a deficient number, since it is larger than the sum of its proper divisors (526394).

1020634 is an equidigital number, since it uses as much as digits as its factorization.

1020634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5360.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1020634 is about 1010.2643218485. The cubic root of 1020634 is about 100.6831228062.

Adding to 1020634 its reverse (4360201), we get a palindrome (5380835).

The spelling of 1020634 in words is "one million, twenty thousand, six hundred thirty-four".