604066821 has 8 divisors (see below), whose sum is σ = 813726144. Its totient is φ = 398559360.

The previous prime is 604066787. The next prime is 604066823. The reversal of 604066821 is 128660406.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 604066821 - 2⁷ = 604066693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (604066823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1037625 + ... + 1038206.

It is an arithmetic number, because the mean of its divisors is an integer number (101715768).

Almost surely, 2^604066821 is an apocalyptic number.

It is an amenable number.

604066821 is a deficient number, since it is larger than the sum of its proper divisors (209659323).

604066821 is a wasteful number, since it uses less digits than its factorization.

604066821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2075931.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 604066821 is about 24577.7708712568. The cubic root of 604066821 is about 845.3339813964. Note that the first 3 decimals are identical.

The spelling of 604066821 in words is "six hundred four million, sixty-six thousand, eight hundred twenty-one".