604972840 has 24 divisors (see below), whose sum is σ = 1361538990. Its totient is φ = 241926912.

The previous prime is 604972831. The next prime is 604972847. The reversal of 604972840 is 48279406.

It can be written as a sum of positive squares in 3 ways, for example, as 573410916 + 31561924 = 23946^2 + 5618^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 604972793 and 604972802.

It is not an unprimeable number, because it can be changed into a prime (604972847) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 153616 + ... + 157504.

Almost surely, 2^604972840 is an apocalyptic number.

It is an amenable number.

604972840 is an abundant number, since it is smaller than the sum of its proper divisors (756566150).

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

604972840 is an frugal number, since it uses more digits than its factorization.

604972840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7789 (or 3896 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 604972840 is about 24596.1956407897. The cubic root of 604972840 is about 845.7563993755.

Multiplying 604972840 by its sum of digits (40), we get a square (24198913600 = 155560²).

604972840 divided by its sum of digits (40) gives a square (15124321 = 3889²).

It can be divided in two parts, 60 and 4972840, that added together give a square (4972900 = 2230²).

The spelling of 604972840 in words is "six hundred four million, nine hundred seventy-two thousand, eight hundred forty".