7641565 has 4 divisors (see below), whose sum is σ = 9169884. Its totient is φ = 6113248.

The previous prime is 7641533. The next prime is 7641611. The reversal of 7641565 is 5651467.

It is a happy number.

7641565 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5651467 = 61 ⋅92647.

It can be written as a sum of positive squares in 2 ways, for example, as 2524921 + 5116644 = 1589^2 + 2262^2 .

It is a cyclic number.

It is not a de Polignac number, because 7641565 - 2⁵ = 7641533 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 7641565.

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, 764152 + ... + 764161.

It is an arithmetic number, because the mean of its divisors is an integer number (2292471).

Almost surely, 2^7641565 is an apocalyptic number.

It is an amenable number.

7641565 is a deficient number, since it is larger than the sum of its proper divisors (1528319).

7641565 is a wasteful number, since it uses less digits than its factorization.

7641565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528318.

The product of its digits is 25200, while the sum is 34.

The square root of 7641565 is about 2764.3380762852. The cubic root of 7641565 is about 196.9672873783.

The spelling of 7641565 in words is "seven million, six hundred forty-one thousand, five hundred sixty-five".