4065611645 has 8 divisors (see below), whose sum is σ = 5046966360. Its totient is φ = 3140334400.

The previous prime is 4065611639. The next prime is 4065611651. The reversal of 4065611645 is 5461165604.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4065611639) and next prime (4065611651).

It can be written as a sum of positive squares in 4 ways, for example, as 2951524 + 4062660121 = 1718^2 + 63739^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4065611645 - 2¹² = 4065607549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4065611599 and 4065611608.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14019206 + ... + 14019495.

It is an arithmetic number, because the mean of its divisors is an integer number (630870795).

Almost surely, 2^4065611645 is an apocalyptic number.

It is an amenable number.

4065611645 is a deficient number, since it is larger than the sum of its proper divisors (981354715).

4065611645 is a wasteful number, since it uses less digits than its factorization.

4065611645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28038735.

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 4065611645 is about 63762.1489992299. The cubic root of 4065611645 is about 1596.0333571597.

The spelling of 4065611645 in words is "four billion, sixty-five million, six hundred eleven thousand, six hundred forty-five".