5436685640 has 32 divisors (see below), whose sum is σ = 12235364280. Its totient is φ = 2174172672.

The previous prime is 5436685637. The next prime is 5436685673. The reversal of 5436685640 is 465866345.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3194284324 + 2242401316 = 56518^2 + 47354^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194804 + ... + 220956.

Almost surely, 2^5436685640 is an apocalyptic number.

It is an amenable number.

5436685640 is an abundant number, since it is smaller than the sum of its proper divisors (6798678640).

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

5436685640 is a wasteful number, since it uses less digits than its factorization.

5436685640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31361 (or 31357 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 47.

The square root of 5436685640 is about 73733.8839340503. The cubic root of 5436685640 is about 1758.3746228609.

The spelling of 5436685640 in words is "five billion, four hundred thirty-six million, six hundred eighty-five thousand, six hundred forty".