606021 has 16 divisors (see below), whose sum is σ = 893760. Its totient is φ = 362880.

The previous prime is 606017. The next prime is 606029. The reversal of 606021 is 120606.

606021 = 101² + 102² + ... + 141².

It is not a de Polignac number, because 606021 - 2² = 606017 is a prime.

It is a super-2 number, since 2×606021² = 734522904882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (606029) 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 15 ways as a sum of consecutive naturals, for example, 1410 + ... + 1788.

It is an arithmetic number, because the mean of its divisors is an integer number (55860).

2⁶⁰⁶⁰²¹ is an apocalyptic number.

It is an amenable number.

606021 is a deficient number, since it is larger than the sum of its proper divisors (287739).

606021 is a wasteful number, since it uses less digits than its factorization.

606021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 606021 is about 778.4735062929. The cubic root of 606021 is about 84.6244562641.

Adding to 606021 its reverse (120606), we get a palindrome (726627).

It can be divided in two parts, 6060 and 21, that multiplied together give a triangular number (127260 = T₅₀₄).

The spelling of 606021 in words is "six hundred six thousand, twenty-one".