8745421 has 8 divisors (see below), whose sum is σ = 8895744. Its totient is φ = 8596560.

The previous prime is 8745419. The next prime is 8745437. The reversal of 8745421 is 1245478.

8745421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 8745421 - 2¹ = 8745419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8742421) 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, 20076 + ... + 20506.

It is an arithmetic number, because the mean of its divisors is an integer number (1111968).

Almost surely, 2^8745421 is an apocalyptic number.

It is an amenable number.

8745421 is a deficient number, since it is larger than the sum of its proper divisors (150323).

8745421 is a wasteful number, since it uses less digits than its factorization.

8745421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731.

The product of its digits is 8960, while the sum is 31.

The square root of 8745421 is about 2957.2657979965. The cubic root of 8745421 is about 206.0283132605.

The spelling of 8745421 in words is "eight million, seven hundred forty-five thousand, four hundred twenty-one".