7405565 has 4 divisors (see below), whose sum is σ = 8886684. Its totient is φ = 5924448.

The previous prime is 7405547. The next prime is 7405571. The reversal of 7405565 is 5655047.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5655047 = 53 ⋅106699.

It can be written as a sum of positive squares in 2 ways, for example, as 1592644 + 5812921 = 1262^2 + 2411^2 .

It is a cyclic number.

It is not a de Polignac number, because 7405565 - 2⁶ = 7405501 is a prime.

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, 740552 + ... + 740561.

It is an arithmetic number, because the mean of its divisors is an integer number (2221671).

Almost surely, 2^7405565 is an apocalyptic number.

It is an amenable number.

7405565 is a deficient number, since it is larger than the sum of its proper divisors (1481119).

7405565 is a wasteful number, since it uses less digits than its factorization.

7405565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481118.

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 7405565 is about 2721.3167768564. The cubic root of 7405565 is about 194.9183528449.

The spelling of 7405565 in words is "seven million, four hundred five thousand, five hundred sixty-five".