545370640 has 40 divisors (see below), whose sum is σ = 1282250520. Its totient is φ = 215694336.

The previous prime is 545370601. The next prime is 545370647. The reversal of 545370640 is 46073545.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 85525504 + 459845136 = 9248^2 + 21444^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 545370596 and 545370605.

It is not an unprimeable number, because it can be changed into a prime (545370647) 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, 31179 + ... + 45418.

It is an arithmetic number, because the mean of its divisors is an integer number (32056263).

Almost surely, 2^545370640 is an apocalyptic number.

It is an amenable number.

545370640 is an abundant number, since it is smaller than the sum of its proper divisors (736879880).

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

545370640 is a wasteful number, since it uses less digits than its factorization.

545370640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76699 (or 76693 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 34.

The square root of 545370640 is about 23353.1719472966. The cubic root of 545370640 is about 817.0160433950.

The spelling of 545370640 in words is "five hundred forty-five million, three hundred seventy thousand, six hundred forty".