1020646 has 16 divisors (see below), whose sum is σ = 1769040. Its totient is φ = 436480.

The previous prime is 1020631. The next prime is 1020667. The reversal of 1020646 is 6460201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 991 + ... + 1738.

It is an arithmetic number, because the mean of its divisors is an integer number (110565).

2^1020646 is an apocalyptic number.

1020646 is a deficient number, since it is larger than the sum of its proper divisors (748394).

1020646 is a wasteful number, since it uses less digits than its factorization.

1020646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2759.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1020646 is about 1010.2702608708. The cubic root of 1020646 is about 100.6835173952.

Adding to 1020646 its reverse (6460201), we get a palindrome (7480847).

The spelling of 1020646 in words is "one million, twenty thousand, six hundred forty-six".