1020655 has 8 divisors (see below), whose sum is σ = 1267200. Its totient is φ = 788256.

The previous prime is 1020631. The next prime is 1020667. The reversal of 1020655 is 5560201.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1020655 - 2⁹ = 1020143 is a prime.

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, 3375 + ... + 3664.

It is an arithmetic number, because the mean of its divisors is an integer number (158400).

2^1020655 is an apocalyptic number.

1020655 is a deficient number, since it is larger than the sum of its proper divisors (246545).

1020655 is an equidigital number, since it uses as much as digits as its factorization.

1020655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7073.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 1020655 is about 1010.2747151147. The cubic root of 1020655 is about 100.6838133348.

Adding to 1020655 its reverse (5560201), we get a palindrome (6580856).

The spelling of 1020655 in words is "one million, twenty thousand, six hundred fifty-five".