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64398 = 2310733
BaseRepresentation
bin1111101110001110
310021100010
433232032
54030043
61214050
7355515
oct175616
9107303
1064398
1144424
1231326
1323409
141967c
1514133
hexfb8e

64398 has 8 divisors (see below), whose sum is σ = 128808. Its totient is φ = 21464.

The previous prime is 64381. The next prime is 64399. The reversal of 64398 is 89346.

It is a sphenic number, since it is the product of 3 distinct primes.

64398 is an admirable number.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 64398.

It is not an unprimeable number, because it can be changed into a prime (64399) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5361 + ... + 5372.

It is an arithmetic number, because the mean of its divisors is an integer number (16101).

264398 is an apocalyptic number.

64398 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64404).

64398 is a wasteful number, since it uses less digits than its factorization.

64398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10738.

The product of its digits is 5184, while the sum is 30.

The square root of 64398 is about 253.7676102264. The cubic root of 64398 is about 40.0827453787.

It can be divided in two parts, 643 and 98, that added together give a triangular number (741 = T38).

The spelling of 64398 in words is "sixty-four thousand, three hundred ninety-eight".

Divisors: 1 2 3 6 10733 21466 32199 64398