64198720 has 56 divisors (see below), whose sum is σ = 160934400. Its totient is φ = 24325632.

The previous prime is 64198703. The next prime is 64198753. The reversal of 64198720 is 2789146.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 64198720.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 801 + ... + 11359.

Almost surely, 2^64198720 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 64198720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80467200).

64198720 is an abundant number, since it is smaller than the sum of its proper divisors (96735680).

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

64198720 is a wasteful number, since it uses less digits than its factorization.

64198720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10595 (or 10585 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 64198720 is about 8012.4103739137. The cubic root of 64198720 is about 400.4135722476.

The spelling of 64198720 in words is "sixty-four million, one hundred ninety-eight thousand, seven hundred twenty".