5645599 has 4 divisors (see below), whose sum is σ = 5776936. Its totient is φ = 5514264.

The previous prime is 5645579. The next prime is 5645609. The reversal of 5645599 is 9955465.

5645599 = T₂₂₉ + T₂₃₀ + ... + T₃₅₇.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5645599 - 2¹³ = 5637407 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 131293 = 5645599 / (5 + 6 + 4 + 5 + 5 + 9 + 9).

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5645539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65604 + ... + 65689.

It is an arithmetic number, because the mean of its divisors is an integer number (1444234).

Almost surely, 2^5645599 is an apocalyptic number.

5645599 is a deficient number, since it is larger than the sum of its proper divisors (131337).

5645599 is a wasteful number, since it uses less digits than its factorization.

5645599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131336.

The product of its digits is 243000, while the sum is 43.

The square root of 5645599 is about 2376.0469271460. The cubic root of 5645599 is about 178.0614924519.

The spelling of 5645599 in words is "five million, six hundred forty-five thousand, five hundred ninety-nine".