7566864365 has 4 divisors (see below), whose sum is σ = 9080237244. Its totient is φ = 6053491488.

The previous prime is 7566864359. The next prime is 7566864397. The reversal of 7566864365 is 5634686657.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5634686657 = 109 ⋅51694373.

It can be written as a sum of positive squares in 2 ways, for example, as 2260907401 + 5305956964 = 47549^2 + 72842^2 .

It is a cyclic number.

It is not a de Polignac number, because 7566864365 - 2⁶ = 7566864301 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7566864365.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 756686432 + ... + 756686441.

It is an arithmetic number, because the mean of its divisors is an integer number (2270059311).

Almost surely, 2^7566864365 is an apocalyptic number.

It is an amenable number.

7566864365 is a deficient number, since it is larger than the sum of its proper divisors (1513372879).

7566864365 is a wasteful number, since it uses less digits than its factorization.

7566864365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513372878.

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

The square root of 7566864365 is about 86987.7253697325. The cubic root of 7566864365 is about 1963.2336221083.

The spelling of 7566864365 in words is "seven billion, five hundred sixty-six million, eight hundred sixty-four thousand, three hundred sixty-five".