8127745 has 8 divisors (see below), whose sum is σ = 9777384. Its totient is φ = 6486144.

The previous prime is 8127737. The next prime is 8127761. The reversal of 8127745 is 5477218.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 767376 + 7360369 = 876^2 + 2713^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 8127745 - 2³ = 8127737 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8127745.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 507 + ... + 4063.

It is an arithmetic number, because the mean of its divisors is an integer number (1222173).

Almost surely, 2^8127745 is an apocalyptic number.

It is an amenable number.

8127745 is a deficient number, since it is larger than the sum of its proper divisors (1649639).

8127745 is a wasteful number, since it uses less digits than its factorization.

8127745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4019.

The product of its digits is 15680, while the sum is 34.

The square root of 8127745 is about 2850.9200269387. The cubic root of 8127745 is about 201.0589251592.

The spelling of 8127745 in words is "eight million, one hundred twenty-seven thousand, seven hundred forty-five".