604004400 has 90 divisors (see below), whose sum is σ = 2096075540. Its totient is φ = 161066880.

The previous prime is 604004389. The next prime is 604004411. The reversal of 604004400 is 4400406.

It is an interprime number because it is at equal distance from previous prime (604004389) and next prime (604004411).

It is a tau number, because it is divible by the number of its divisors (90).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 80290 + ... + 87489.

Almost surely, 2^604004400 is an apocalyptic number.

604004400 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

604004400 is an abundant number, since it is smaller than the sum of its proper divisors (1492071140).

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

604004400 is a wasteful number, since it uses less digits than its factorization.

604004400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167803 (or 167789 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 604004400 is about 24576.5009714565. The cubic root of 604004400 is about 845.3048629787.

Adding to 604004400 its reverse (4400406), we get a palindrome (608404806).

The spelling of 604004400 in words is "six hundred four million, four thousand, four hundred".