7887081 has 12 divisors (see below), whose sum is σ = 10664592. Its totient is φ = 5184648.

The previous prime is 7887053. The next prime is 7887083. The reversal of 7887081 is 1807887.

It is a happy number.

It is not a de Polignac number, because 7887081 - 2¹⁴ = 7870697 is a prime.

It is a super-2 number, since 2×7887081² = 124412093401122, which contains 22 as substring.

It is an Ulam number.

7887081 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7887083) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48306 + ... + 48468.

It is an arithmetic number, because the mean of its divisors is an integer number (888716).

Almost surely, 2^7887081 is an apocalyptic number.

It is an amenable number.

7887081 is a deficient number, since it is larger than the sum of its proper divisors (2777511).

7887081 is a wasteful number, since it uses less digits than its factorization.

7887081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420 (or 293 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 39.

The square root of 7887081 is about 2808.3947372120. The cubic root of 7887081 is about 199.0545459593.

The spelling of 7887081 in words is "seven million, eight hundred eighty-seven thousand, eighty-one".