604613621 has 4 divisors (see below), whose sum is σ = 604902144. Its totient is φ = 604325100.

The previous prime is 604613617. The next prime is 604613641. The reversal of 604613621 is 126316406.

It is a happy number.

604613621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 604613621 - 2² = 604613617 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 (604613641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141095 + ... + 145316.

It is an arithmetic number, because the mean of its divisors is an integer number (151225536).

Almost surely, 2^604613621 is an apocalyptic number.

It is an amenable number.

604613621 is a deficient number, since it is larger than the sum of its proper divisors (288523).

604613621 is a wasteful number, since it uses less digits than its factorization.

604613621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288522.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 604613621 is about 24588.8922279960. The cubic root of 604613621 is about 845.5889693137.

The spelling of 604613621 in words is "six hundred four million, six hundred thirteen thousand, six hundred twenty-one".