9078665 has 4 divisors (see below), whose sum is σ = 10894404. Its totient is φ = 7262928.

The previous prime is 9078631. The next prime is 9078673. The reversal of 9078665 is 5668709.

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: 5668709 = 1129 ⋅5021.

It can be written as a sum of positive squares in 2 ways, for example, as 2948089 + 6130576 = 1717^2 + 2476^2 .

It is a cyclic number.

It is not a de Polignac number, because 9078665 - 2¹⁴ = 9062281 is a prime.

It is a Duffinian 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, 907862 + ... + 907871.

It is an arithmetic number, because the mean of its divisors is an integer number (2723601).

Almost surely, 2^9078665 is an apocalyptic number.

It is an amenable number.

9078665 is a deficient number, since it is larger than the sum of its proper divisors (1815739).

9078665 is a wasteful number, since it uses less digits than its factorization.

9078665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1815738.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 9078665 is about 3013.0823088658. The cubic root of 9078665 is about 208.6126614055.

The spelling of 9078665 in words is "nine million, seventy-eight thousand, six hundred sixty-five".