604640040 has 64 divisors (see below), whose sum is σ = 1909396800. Its totient is φ = 152750592.

The previous prime is 604640011. The next prime is 604640041. The reversal of 604640040 is 40046406.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (604640041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130317 + ... + 134876.

It is an arithmetic number, because the mean of its divisors is an integer number (29834325).

Almost surely, 2^604640040 is an apocalyptic number.

604640040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

604640040 is an abundant number, since it is smaller than the sum of its proper divisors (1304756760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

604640040 is a wasteful number, since it uses less digits than its factorization.

604640040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265226 (or 265222 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 604640040 is about 24589.4294362435. The cubic root of 604640040 is about 845.6012853278.

Adding to 604640040 its reverse (40046406), we get a palindrome (644686446).

The spelling of 604640040 in words is "six hundred four million, six hundred forty thousand, forty".