608421 has 16 divisors (see below), whose sum is σ = 898560. Its totient is φ = 363120.

The previous prime is 608411. The next prime is 608423. The reversal of 608421 is 124806.

608421 = 24² + 25² + ... + 122².

It is not a de Polignac number, because 608421 - 2⁵ = 608389 is a prime.

It is a super-2 number, since 2×608421² = 740352226482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (608423) 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, 3310 + ... + 3488.

It is an arithmetic number, because the mean of its divisors is an integer number (56160).

2⁶⁰⁸⁴²¹ is an apocalyptic number.

It is an amenable number.

608421 is a deficient number, since it is larger than the sum of its proper divisors (290139).

608421 is a wasteful number, since it uses less digits than its factorization.

608421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 608421 is about 780.0134614223. The cubic root of 608421 is about 84.7360207014.

Subtracting from 608421 its sum of digits (21), we obtain a square (608400 = 780²).

It can be divided in two parts, 6084 and 21, that added together give a triangular number (6105 = T₁₁₀).

The spelling of 608421 in words is "six hundred eight thousand, four hundred twenty-one".