8160621 has 16 divisors (see below), whose sum is σ = 12595200. Its totient is φ = 4603248.

The previous prime is 8160617. The next prime is 8160631. The reversal of 8160621 is 1260618.

It is not a de Polignac number, because 8160621 - 2² = 8160617 is a prime.

8160621 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 8160591 and 8160600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8160601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 801 + ... + 4118.

It is an arithmetic number, because the mean of its divisors is an integer number (787200).

Almost surely, 2^8160621 is an apocalyptic number.

It is an amenable number.

8160621 is a deficient number, since it is larger than the sum of its proper divisors (4434579).

8160621 is a wasteful number, since it uses less digits than its factorization.

8160621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5008.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 8160621 is about 2856.6800660907. The cubic root of 8160621 is about 201.3296489124.

The spelling of 8160621 in words is "eight million, one hundred sixty thousand, six hundred twenty-one".