604981421 has 4 divisors (see below), whose sum is σ = 659979744. Its totient is φ = 549983100.

The previous prime is 604981393. The next prime is 604981423. The reversal of 604981421 is 124189406.

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 604981421 - 2⁶ = 604981357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (604981423) 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, 27499145 + ... + 27499166.

It is an arithmetic number, because the mean of its divisors is an integer number (164994936).

Almost surely, 2^604981421 is an apocalyptic number.

It is an amenable number.

604981421 is a deficient number, since it is larger than the sum of its proper divisors (54998323).

604981421 is a wasteful number, since it uses less digits than its factorization.

604981421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54998322.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 604981421 is about 24596.3700777168. The cubic root of 604981421 is about 845.7603981233.

The spelling of 604981421 in words is "six hundred four million, nine hundred eighty-one thousand, four hundred twenty-one".