7663947 has 4 divisors (see below), whose sum is σ = 10218600. Its totient is φ = 5109296.

The previous prime is 7663927. The next prime is 7663951. The reversal of 7663947 is 7493667.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7663947 - 2¹⁶ = 7598411 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7663899 and 7663908.

It is not an unprimeable number, because it can be changed into a prime (7663907) 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 3 ways as a sum of consecutive naturals, for example, 1277322 + ... + 1277327.

It is an arithmetic number, because the mean of its divisors is an integer number (2554650).

Almost surely, 2^7663947 is an apocalyptic number.

7663947 is a deficient number, since it is larger than the sum of its proper divisors (2554653).

7663947 is a wasteful number, since it uses less digits than its factorization.

7663947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2554652.

The product of its digits is 190512, while the sum is 42.

The square root of 7663947 is about 2768.3834633230. The cubic root of 7663947 is about 197.1594044232.

The spelling of 7663947 in words is "seven million, six hundred sixty-three thousand, nine hundred forty-seven".