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64897195 = 5117116619
BaseRepresentation
bin1111011110010…
…0000010101011
311112010010012211
43313210002223
5113103202240
610234545551
71415421436
oct367440253
9145103184
1064897195
11336a6250
12198982b7
13105a300c
14889481d
155a6dbea
hex3de40ab

64897195 has 16 divisors (see below), whose sum is σ = 86158080. Its totient is φ = 46530400.

The previous prime is 64897187. The next prime is 64897201. The reversal of 64897195 is 59179846.

It is not a de Polignac number, because 64897195 - 23 = 64897187 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4405 + ... + 12214.

It is an arithmetic number, because the mean of its divisors is an integer number (5384880).

Almost surely, 264897195 is an apocalyptic number.

64897195 is a deficient number, since it is larger than the sum of its proper divisors (21260885).

64897195 is a wasteful number, since it uses less digits than its factorization.

64897195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16706.

The product of its digits is 544320, while the sum is 49.

The square root of 64897195 is about 8055.8795298837. The cubic root of 64897195 is about 401.8604892825.

The spelling of 64897195 in words is "sixty-four million, eight hundred ninety-seven thousand, one hundred ninety-five".

Divisors: 1 5 11 55 71 355 781 3905 16619 83095 182809 914045 1179949 5899745 12979439 64897195