8727641 has 4 divisors (see below), whose sum is σ = 9399012. Its totient is φ = 8056272.

The previous prime is 8727623. The next prime is 8727643. The reversal of 8727641 is 1467278.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1467278 = 2 ⋅733639.

It can be written as a sum of positive squares in 2 ways, for example, as 3345241 + 5382400 = 1829^2 + 2320^2 .

It is a cyclic number.

It is not a de Polignac number, because 8727641 - 2⁶ = 8727577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8727643) 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, 335666 + ... + 335691.

It is an arithmetic number, because the mean of its divisors is an integer number (2349753).

Almost surely, 2^8727641 is an apocalyptic number.

It is an amenable number.

8727641 is a deficient number, since it is larger than the sum of its proper divisors (671371).

8727641 is a wasteful number, since it uses less digits than its factorization.

8727641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671370.

The product of its digits is 18816, while the sum is 35.

The square root of 8727641 is about 2954.2581133002. The cubic root of 8727641 is about 205.8885956218. Note that the first 3 decimals are identical.

The spelling of 8727641 in words is "eight million, seven hundred twenty-seven thousand, six hundred forty-one".