8016621 has 16 divisors (see below), whose sum is σ = 11003904. Its totient is φ = 5189184.

The previous prime is 8016611. The next prime is 8016637. The reversal of 8016621 is 1266108.

It is not a de Polignac number, because 8016621 - 2⁷ = 8016493 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 8016591 and 8016600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8016611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19995 + ... + 20391.

It is an arithmetic number, because the mean of its divisors is an integer number (687744).

Almost surely, 2^8016621 is an apocalyptic number.

It is an amenable number.

8016621 is a deficient number, since it is larger than the sum of its proper divisors (2987283).

8016621 is a wasteful number, since it uses less digits than its factorization.

8016621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580.

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

The square root of 8016621 is about 2831.3638056597. The cubic root of 8016621 is about 200.1384125211.

The spelling of 8016621 in words is "eight million, sixteen thousand, six hundred twenty-one".