9881745 has 8 divisors (see below), whose sum is σ = 15810816. Its totient is φ = 5270256.

The previous prime is 9881741. The next prime is 9881747. The reversal of 9881745 is 5471889.

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

It is not a de Polignac number, because 9881745 - 2² = 9881741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9881697 and 9881706.

It is not an unprimeable number, because it can be changed into a prime (9881741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329377 + ... + 329406.

It is an arithmetic number, because the mean of its divisors is an integer number (1976352).

Almost surely, 2^9881745 is an apocalyptic number.

It is an amenable number.

9881745 is a deficient number, since it is larger than the sum of its proper divisors (5929071).

9881745 is a wasteful number, since it uses less digits than its factorization.

9881745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658791.

The product of its digits is 80640, while the sum is 42.

The square root of 9881745 is about 3143.5242960728. The cubic root of 9881745 is about 214.5908570167.

The spelling of 9881745 in words is "nine million, eight hundred eighty-one thousand, seven hundred forty-five".