8016640 has 36 divisors (see below), whose sum is σ = 19205424. Its totient is φ = 3206144.

The previous prime is 8016637. The next prime is 8016643. The reversal of 8016640 is 466108.

It is an interprime number because it is at equal distance from previous prime (8016637) and next prime (8016643).

It is not an unprimeable number, because it can be changed into a prime (8016643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1852 + ... + 4411.

It is an arithmetic number, because the mean of its divisors is an integer number (533484).

Almost surely, 2^8016640 is an apocalyptic number.

8016640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8016640 is an abundant number, since it is smaller than the sum of its proper divisors (11188784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8016640 is an equidigital number, since it uses as much as digits as its factorization.

8016640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6284 (or 6270 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 8016640 is about 2831.3671609313. The cubic root of 8016640 is about 200.1385706354.

The spelling of 8016640 in words is "eight million, sixteen thousand, six hundred forty".