7663881 has 8 divisors (see below), whose sum is σ = 10236064. Its totient is φ = 5100480.

The previous prime is 7663871. The next prime is 7663907. The reversal of 7663881 is 1883667.

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

It is not a de Polignac number, because 7663881 - 2¹¹ = 7661833 is a prime.

It is a super-2 number, since 2×7663881² = 117470143964322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7663871) 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 7 ways as a sum of consecutive naturals, for example, 225 + ... + 3921.

It is an arithmetic number, because the mean of its divisors is an integer number (1279508).

Almost surely, 2^7663881 is an apocalyptic number.

It is an amenable number.

7663881 is a deficient number, since it is larger than the sum of its proper divisors (2572183).

7663881 is a wasteful number, since it uses less digits than its factorization.

7663881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4391.

The product of its digits is 48384, while the sum is 39.

The square root of 7663881 is about 2768.3715429833. The cubic root of 7663881 is about 197.1588384590.

The spelling of 7663881 in words is "seven million, six hundred sixty-three thousand, eight hundred eighty-one".