64998120 has 128 divisors (see below), whose sum is σ = 218090880. Its totient is φ = 15360000.

The previous prime is 64998091. The next prime is 64998151. The reversal of 64998120 is 2189946.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53520 + ... + 54720.

It is an arithmetic number, because the mean of its divisors is an integer number (1703835).

Almost surely, 2^64998120 is an apocalyptic number.

64998120 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64998120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109045440).

64998120 is an abundant number, since it is smaller than the sum of its proper divisors (153092760).

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

64998120 is a wasteful number, since it uses less digits than its factorization.

64998120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267 (or 1263 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 64998120 is about 8062.1411548050. The cubic root of 64998120 is about 402.0686994295.

The spelling of 64998120 in words is "sixty-four million, nine hundred ninety-eight thousand, one hundred twenty".