7998860 has 48 divisors (see below), whose sum is σ = 17563392. Its totient is φ = 3057600.

The previous prime is 7998853. The next prime is 7998863. The reversal of 7998860 is 688997.

It is a super-2 number, since 2×7998860² = 127963522599200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7998863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60995 + ... + 61125.

It is an arithmetic number, because the mean of its divisors is an integer number (365904).

Almost surely, 2^7998860 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7998860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8781696).

7998860 is an abundant number, since it is smaller than the sum of its proper divisors (9564532).

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

7998860 is a wasteful number, since it uses less digits than its factorization.

7998860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 47.

The square root of 7998860 is about 2828.2255921337. The cubic root of 7998860 is about 199.9904995487.

The spelling of 7998860 in words is "seven million, nine hundred ninety-eight thousand, eight hundred sixty".