604432021 has 4 divisors (see below), whose sum is σ = 604592352. Its totient is φ = 604271692.

The previous prime is 604431977. The next prime is 604432039. The reversal of 604432021 is 120234406.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 604432021 - 2²¹ = 602334869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 604431983 and 604432001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (604432091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74371 + ... + 82096.

It is an arithmetic number, because the mean of its divisors is an integer number (151148088).

Almost surely, 2^604432021 is an apocalyptic number.

It is an amenable number.

604432021 is a deficient number, since it is larger than the sum of its proper divisors (160331).

604432021 is a wasteful number, since it uses less digits than its factorization.

604432021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160330.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 604432021 is about 24585.1992263638. The cubic root of 604432021 is about 845.5043012831.

Adding to 604432021 its reverse (120234406), we get a palindrome (724666427).

The spelling of 604432021 in words is "six hundred four million, four hundred thirty-two thousand, twenty-one".