8490621 has 8 divisors (see below), whose sum is σ = 11686144. Its totient is φ = 5477760.

The previous prime is 8490619. The next prime is 8490623. The reversal of 8490621 is 1260948.

8490621 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (8490619) and next prime (8490623).

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

It is not a de Polignac number, because 8490621 - 2¹ = 8490619 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8490623) 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, 45556 + ... + 45741.

It is an arithmetic number, because the mean of its divisors is an integer number (1460768).

Almost surely, 2^8490621 is an apocalyptic number.

It is an amenable number.

8490621 is a deficient number, since it is larger than the sum of its proper divisors (3195523).

8490621 is a wasteful number, since it uses less digits than its factorization.

8490621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91331.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 8490621 is about 2913.8670182423. The cubic root of 8490621 is about 204.0076650330.

The spelling of 8490621 in words is "eight million, four hundred ninety thousand, six hundred twenty-one".