8461621 has 8 divisors (see below), whose sum is σ = 9906624. Its totient is φ = 7075680.

The previous prime is 8461613. The next prime is 8461627. The reversal of 8461621 is 1261648.

8461621 is digitally balanced in base 3, 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 8461621 - 2³ = 8461613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8461621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8461627) 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, 14455 + ... + 15028.

It is an arithmetic number, because the mean of its divisors is an integer number (1238328).

Almost surely, 2^8461621 is an apocalyptic number.

It is an amenable number.

8461621 is a deficient number, since it is larger than the sum of its proper divisors (1445003).

8461621 is a wasteful number, since it uses less digits than its factorization.

8461621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29531.

The product of its digits is 2304, while the sum is 28.

The square root of 8461621 is about 2908.8865567430. The cubic root of 8461621 is about 203.7751350928.

The spelling of 8461621 in words is "eight million, four hundred sixty-one thousand, six hundred twenty-one".