4575666449 has 6 divisors (see below), whose sum is σ = 4581036306. Its totient is φ = 4570302560.

The previous prime is 4575666427. The next prime is 4575666503. The reversal of 4575666449 is 9446665754.

It can be written as a sum of positive squares in only one way, i.e., 3815285824 + 760380625 = 61768^2 + 27575^2 .

It is a de Polignac number, because none of the positive numbers 2^k-4575666449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4575666394 and 4575666403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4575666049) 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, 1214729 + ... + 1218489.

It is an arithmetic number, because the mean of its divisors is an integer number (763506051).

Almost surely, 2^4575666449 is an apocalyptic number.

It is an amenable number.

4575666449 is a deficient number, since it is larger than the sum of its proper divisors (5369857).

4575666449 is an frugal number, since it uses more digits than its factorization.

4575666449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5967 (or 4864 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 56.

The square root of 4575666449 is about 67643.6726457102. The cubic root of 4575666449 is about 1660.1657608944.

The spelling of 4575666449 in words is "four billion, five hundred seventy-five million, six hundred sixty-six thousand, four hundred forty-nine".