7663641 has 16 divisors (see below), whose sum is σ = 10511424. Its totient is φ = 4964544.

The previous prime is 7663637. The next prime is 7663693. The reversal of 7663641 is 1463667.

It is not a de Polignac number, because 7663641 - 2² = 7663637 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7663241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24810 + ... + 25116.

It is an arithmetic number, because the mean of its divisors is an integer number (656964).

Almost surely, 2^7663641 is an apocalyptic number.

It is an amenable number.

7663641 is a deficient number, since it is larger than the sum of its proper divisors (2847783).

7663641 is a wasteful number, since it uses less digits than its factorization.

7663641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520.

The product of its digits is 18144, while the sum is 33.

The square root of 7663641 is about 2768.3281958612. The cubic root of 7663641 is about 197.1567803801.

The spelling of 7663641 in words is "seven million, six hundred sixty-three thousand, six hundred forty-one".