65198196 has 240 divisors, whose sum is σ = 219542400. Its totient is φ = 16422912.

The previous prime is 65198183. The next prime is 65198197. The reversal of 65198196 is 69189156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65198197) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 732520 + ... + 732608.

It is an arithmetic number, because the mean of its divisors is an integer number (914760).

Almost surely, 2^65198196 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 65198196, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109771200).

65198196 is an abundant number, since it is smaller than the sum of its proper divisors (154344204).

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

65198196 is a wasteful number, since it uses less digits than its factorization.

65198196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 137 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 65198196 is about 8074.5399868971. The cubic root of 65198196 is about 402.4808236431.

The spelling of 65198196 in words is "sixty-five million, one hundred ninety-eight thousand, one hundred ninety-six".