7648665 has 8 divisors (see below), whose sum is σ = 12237888. Its totient is φ = 4079280.

The previous prime is 7648649. The next prime is 7648687. The reversal of 7648665 is 5668467.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7648665 - 2⁴ = 7648649 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254941 + ... + 254970.

It is an arithmetic number, because the mean of its divisors is an integer number (1529736).

Almost surely, 2^7648665 is an apocalyptic number.

It is an amenable number.

7648665 is a deficient number, since it is larger than the sum of its proper divisors (4589223).

7648665 is a wasteful number, since it uses less digits than its factorization.

7648665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509919.

The product of its digits is 241920, while the sum is 42.

The square root of 7648665 is about 2765.6219915238. The cubic root of 7648665 is about 197.0282711709.

The spelling of 7648665 in words is "seven million, six hundred forty-eight thousand, six hundred sixty-five".