604640331 has 24 divisors (see below), whose sum is σ = 893898720. Its totient is φ = 393724800.

The previous prime is 604640327. The next prime is 604640369. The reversal of 604640331 is 133046406.

It is not a de Polignac number, because 604640331 - 2² = 604640327 is a prime.

It is a super-2 number, since 2×604640331² = 731179859743579122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 604640295 and 604640304.

It is not an unprimeable number, because it can be changed into a prime (604640371) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65311 + ... + 73991.

It is an arithmetic number, because the mean of its divisors is an integer number (37245780).

Almost surely, 2^604640331 is an apocalyptic number.

604640331 is a deficient number, since it is larger than the sum of its proper divisors (289258389).

604640331 is a wasteful number, since it uses less digits than its factorization.

604640331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8867 (or 8864 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 604640331 is about 24589.4353534196. The cubic root of 604640331 is about 845.6014209842.

Adding to 604640331 its reverse (133046406), we get a palindrome (737686737).

The spelling of 604640331 in words is "six hundred four million, six hundred forty thousand, three hundred thirty-one".