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64393 = 79199
BaseRepresentation
bin1111101110001001
310021022221
433232021
54030033
61214041
7355510
oct175611
9107287
1064393
114441a
1231321
1323404
1419677
151412d
hexfb89

64393 has 4 divisors (see below), whose sum is σ = 73600. Its totient is φ = 55188.

The previous prime is 64381. The next prime is 64399. The reversal of 64393 is 39346.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2k-64393 is a prime.

It is a Duffinian number.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4593 + ... + 4606.

It is an arithmetic number, because the mean of its divisors is an integer number (18400).

264393 is an apocalyptic number.

It is an amenable number.

64393 is a deficient number, since it is larger than the sum of its proper divisors (9207).

64393 is an equidigital number, since it uses as much as digits as its factorization.

64393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9206.

The product of its digits is 1944, while the sum is 25.

The square root of 64393 is about 253.7577585021. The cubic root of 64393 is about 40.0817079815.

It can be divided in two parts, 64 and 393, that multiplied together give a palindrome (25152).

The spelling of 64393 in words is "sixty-four thousand, three hundred ninety-three".

Divisors: 1 7 9199 64393