64198398 has 32 divisors (see below), whose sum is σ = 143332992. Its totient is φ = 19000800.

The previous prime is 64198391. The next prime is 64198403. The reversal of 64198398 is 89389146.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64198391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8473 + ... + 14148.

It is an arithmetic number, because the mean of its divisors is an integer number (4479156).

Almost surely, 2^64198398 is an apocalyptic number.

64198398 is an abundant number, since it is smaller than the sum of its proper divisors (79134594).

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

64198398 is a wasteful number, since it uses less digits than its factorization.

64198398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22680.

The product of its digits is 373248, while the sum is 48.

The square root of 64198398 is about 8012.3902800600. The cubic root of 64198398 is about 400.4129027982.

The spelling of 64198398 in words is "sixty-four million, one hundred ninety-eight thousand, three hundred ninety-eight".