5656765 has 4 divisors (see below), whose sum is σ = 6788124. Its totient is φ = 4525408.

The previous prime is 5656759. The next prime is 5656789. The reversal of 5656765 is 5676565.

5656765 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

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 3790809 + 1865956 = 1947^2 + 1366^2 .

It is a cyclic number.

It is not a de Polignac number, because 5656765 - 2³ = 5656757 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian 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, 565672 + ... + 565681.

It is an arithmetic number, because the mean of its divisors is an integer number (1697031).

Almost surely, 2^5656765 is an apocalyptic number.

It is an amenable number.

5656765 is a deficient number, since it is larger than the sum of its proper divisors (1131359).

5656765 is a wasteful number, since it uses less digits than its factorization.

5656765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131358.

The product of its digits is 189000, while the sum is 40.

The square root of 5656765 is about 2378.3954675369. The cubic root of 5656765 is about 178.1788065622.

The spelling of 5656765 in words is "five million, six hundred fifty-six thousand, seven hundred sixty-five".