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65472265 = 513094453
BaseRepresentation
bin1111100111000…
…0011100001001
311120012100001201
43321300130021
5113230103030
610255144201
71423335145
oct371603411
9146170051
1065472265
1133a59311
1219b15061
13107449b1
1489a4225
155b342ca
hex3e70709

65472265 has 4 divisors (see below), whose sum is σ = 78566724. Its totient is φ = 52377808.

The previous prime is 65472263. The next prime is 65472289. The reversal of 65472265 is 56227456.

65472265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8982009 + 56490256 = 2997^2 + 7516^2 .

It is a cyclic number.

It is not a de Polignac number, because 65472265 - 21 = 65472263 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65472263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6547222 + ... + 6547231.

It is an arithmetic number, because the mean of its divisors is an integer number (19641681).

Almost surely, 265472265 is an apocalyptic number.

It is an amenable number.

65472265 is a deficient number, since it is larger than the sum of its proper divisors (13094459).

65472265 is a wasteful number, since it uses less digits than its factorization.

65472265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13094458.

The product of its digits is 100800, while the sum is 37.

The square root of 65472265 is about 8091.4933726723. The cubic root of 65472265 is about 403.0439952215.

The spelling of 65472265 in words is "sixty-five million, four hundred seventy-two thousand, two hundred sixty-five".

Divisors: 1 5 13094453 65472265