65947398 has 64 divisors (see below), whose sum is σ = 148262400. Its totient is φ = 19388160.

The previous prime is 65947391. The next prime is 65947459. The reversal of 65947398 is 89374956.

It is a self number, because there is not a number n which added to its sum of digits gives 65947398.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65947391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 604968 + ... + 605076.

It is an arithmetic number, because the mean of its divisors is an integer number (2316600).

Almost surely, 2^65947398 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65947398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74131200).

65947398 is an abundant number, since it is smaller than the sum of its proper divisors (82315002).

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

65947398 is a wasteful number, since it uses less digits than its factorization.

65947398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317.

The product of its digits is 1632960, while the sum is 51.

The square root of 65947398 is about 8120.8003300167. The cubic root of 65947398 is about 404.0166112505.

The spelling of 65947398 in words is "sixty-five million, nine hundred forty-seven thousand, three hundred ninety-eight".