7860881 has 4 divisors (see below), whose sum is σ = 8983872. Its totient is φ = 6737892.

The previous prime is 7860877. The next prime is 7860893. The reversal of 7860881 is 1880687.

7860881 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1880687 = 23 ⋅81769.

It is not a de Polignac number, because 7860881 - 2² = 7860877 is a prime.

It is a super-2 number, since 2×7860881² = 123586900192322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7860821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561485 + ... + 561498.

It is an arithmetic number, because the mean of its divisors is an integer number (2245968).

Almost surely, 2^7860881 is an apocalyptic number.

It is an amenable number.

7860881 is a deficient number, since it is larger than the sum of its proper divisors (1122991).

7860881 is a wasteful number, since it uses less digits than its factorization.

7860881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122990.

The product of its (nonzero) digits is 21504, while the sum is 38.

The square root of 7860881 is about 2803.7262705193. The cubic root of 7860881 is about 198.8338891414.

The spelling of 7860881 in words is "seven million, eight hundred sixty thousand, eight hundred eighty-one".