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64884195 = 3251441871
BaseRepresentation
bin1111011110000…
…0110111100011
311112002110101100
43313200313203
5113102243240
610234405443
71415335515
oct367406743
9145073340
1064884195
1133697502
1219890883
131059a11c
14888dbb5
155a69e30
hex3de0de3

64884195 has 12 divisors (see below), whose sum is σ = 112466016. Its totient is φ = 34604880.

The previous prime is 64884191. The next prime is 64884229. The reversal of 64884195 is 59148846.

It is not a de Polignac number, because 64884195 - 22 = 64884191 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1441871 = 64884195 / (6 + 4 + 8 + 8 + 4 + 1 + 9 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 64884195.

It is not an unprimeable number, because it can be changed into a prime (64884191) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 720891 + ... + 720980.

It is an arithmetic number, because the mean of its divisors is an integer number (9372168).

Almost surely, 264884195 is an apocalyptic number.

64884195 is a deficient number, since it is larger than the sum of its proper divisors (47581821).

64884195 is a wasteful number, since it uses less digits than its factorization.

64884195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1441882 (or 1441879 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 64884195 is about 8055.0726253709. The cubic root of 64884195 is about 401.8336543516.

The spelling of 64884195 in words is "sixty-four million, eight hundred eighty-four thousand, one hundred ninety-five".

Divisors: 1 3 5 9 15 45 1441871 4325613 7209355 12976839 21628065 64884195