5656641365 has 4 divisors (see below), whose sum is σ = 6787969644. Its totient is φ = 4525313088.

The previous prime is 5656641311. The next prime is 5656641379. The reversal of 5656641365 is 5631466565.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4337934769 + 1318706596 = 65863^2 + 36314^2 .

It is a cyclic number.

It is not a de Polignac number, because 5656641365 - 2¹⁸ = 5656379221 is a prime.

It is a Duffinian number.

It is a Curzon number.

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, 565664132 + ... + 565664141.

It is an arithmetic number, because the mean of its divisors is an integer number (1696992411).

Almost surely, 2^5656641365 is an apocalyptic number.

It is an amenable number.

5656641365 is a deficient number, since it is larger than the sum of its proper divisors (1131328279).

5656641365 is a wasteful number, since it uses less digits than its factorization.

5656641365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131328278.

The product of its digits is 1944000, while the sum is 47.

The square root of 5656641365 is about 75210.6466200099. The cubic root of 5656641365 is about 1781.7750845292.

The spelling of 5656641365 in words is "five billion, six hundred fifty-six million, six hundred forty-one thousand, three hundred sixty-five".