8457641 has 8 divisors (see below), whose sum is σ = 8940480. Its totient is φ = 7978608.

The previous prime is 8457623. The next prime is 8457643. The reversal of 8457641 is 1467548.

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 8457641 - 2⁶ = 8457577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8457643) 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, 4460 + ... + 6066.

It is an arithmetic number, because the mean of its divisors is an integer number (1117560).

Almost surely, 2^8457641 is an apocalyptic number.

It is an amenable number.

8457641 is a deficient number, since it is larger than the sum of its proper divisors (482839).

8457641 is a wasteful number, since it uses less digits than its factorization.

8457641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1903.

The product of its digits is 26880, while the sum is 35.

The square root of 8457641 is about 2908.2023657235. The cubic root of 8457641 is about 203.7431809227.

The spelling of 8457641 in words is "eight million, four hundred fifty-seven thousand, six hundred forty-one".