7487665 has 4 divisors (see below), whose sum is σ = 8985204. Its totient is φ = 5990128.

The previous prime is 7487657. The next prime is 7487677. The reversal of 7487665 is 5667847.

7487665 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: 5667847 = 29 ⋅195443.

It can be written as a sum of positive squares in 2 ways, for example, as 954529 + 6533136 = 977^2 + 2556^2 .

It is a cyclic number.

It is not a de Polignac number, because 7487665 - 2³ = 7487657 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

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, 748762 + ... + 748771.

It is an arithmetic number, because the mean of its divisors is an integer number (2246301).

Almost surely, 2^7487665 is an apocalyptic number.

It is an amenable number.

7487665 is a deficient number, since it is larger than the sum of its proper divisors (1497539).

7487665 is a wasteful number, since it uses less digits than its factorization.

7487665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1497538.

The product of its digits is 282240, while the sum is 43.

The square root of 7487665 is about 2736.3598082124. The cubic root of 7487665 is about 195.6360123025.

The spelling of 7487665 in words is "seven million, four hundred eighty-seven thousand, six hundred sixty-five".