7648647 has 8 divisors (see below), whose sum is σ = 10227456. Its totient is φ = 5084472.

The previous prime is 7648643. The next prime is 7648649. The reversal of 7648647 is 7468467.

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

It is not a de Polignac number, because 7648647 - 2² = 7648643 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7648599 and 7648608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7648643) by changing a digit.

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, 2373 + ... + 4574.

It is an arithmetic number, because the mean of its divisors is an integer number (1278432).

Almost surely, 2^7648647 is an apocalyptic number.

7648647 is a deficient number, since it is larger than the sum of its proper divisors (2578809).

7648647 is a wasteful number, since it uses less digits than its factorization.

7648647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7317.

The product of its digits is 225792, while the sum is 42.

The square root of 7648647 is about 2765.6187372810. The cubic root of 7648647 is about 197.0281166118.

The spelling of 7648647 in words is "seven million, six hundred forty-eight thousand, six hundred forty-seven".