64198636 has 12 divisors (see below), whose sum is σ = 112470120. Its totient is φ = 32064320.

The previous prime is 64198633. The next prime is 64198669. The reversal of 64198636 is 63689146.

It is a junction number, because it is equal to n+sod(n) for n = 64198592 and 64198601.

It is not an unprimeable number, because it can be changed into a prime (64198633) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4381 + ... + 12148.

It is an arithmetic number, because the mean of its divisors is an integer number (9372510).

Almost surely, 2^64198636 is an apocalyptic number.

It is an amenable number.

64198636 is a deficient number, since it is larger than the sum of its proper divisors (48271484).

64198636 is a wasteful number, since it uses less digits than its factorization.

64198636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17504 (or 17502 counting only the distinct ones).

The product of its digits is 186624, while the sum is 43.

The square root of 64198636 is about 8012.4051320437. The cubic root of 64198636 is about 400.4133976089.

The spelling of 64198636 in words is "sixty-four million, one hundred ninety-eight thousand, six hundred thirty-six".