8651642 has 16 divisors (see below), whose sum is σ = 13309920. Its totient is φ = 4216368.

The previous prime is 8651639. The next prime is 8651647. The reversal of 8651642 is 2461568.

It is a d-powerful number, because it can be written as 8³ + 6² + 5³ + 1 + 6³ + 4⁹ + 2²³ .

It is a junction number, because it is equal to n+sod(n) for n = 8651599 and 8651608.

It is not an unprimeable number, because it can be changed into a prime (8651647) 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, 18293 + ... + 18759.

It is an arithmetic number, because the mean of its divisors is an integer number (831870).

Almost surely, 2^8651642 is an apocalyptic number.

8651642 is a deficient number, since it is larger than the sum of its proper divisors (4658278).

8651642 is a wasteful number, since it uses less digits than its factorization.

8651642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685.

The product of its digits is 11520, while the sum is 32.

The square root of 8651642 is about 2941.3673690989. The cubic root of 8651642 is about 205.2892367733.

The spelling of 8651642 in words is "eight million, six hundred fifty-one thousand, six hundred forty-two".