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7065385 = 51413077
BaseRepresentation
bin11010111100111100101001
3111021221212221
4122330330221
53302043020
6411234041
7114024535
oct32747451
914257787
107065385
113a96368
122448921
131604c02
14d1cbc5
159486aa
hex6bcf29

7065385 has 4 divisors (see below), whose sum is σ = 8478468. Its totient is φ = 5652304.

The previous prime is 7065371. The next prime is 7065389. The reversal of 7065385 is 5835607.

It is a happy number.

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 1175056 + 5890329 = 1084^2 + 2427^2 .

It is a cyclic number.

It is not a de Polignac number, because 7065385 - 27 = 7065257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7065385.

It is not an unprimeable number, because it can be changed into a prime (7065389) 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, 706534 + ... + 706543.

It is an arithmetic number, because the mean of its divisors is an integer number (2119617).

Almost surely, 27065385 is an apocalyptic number.

It is an amenable number.

7065385 is a deficient number, since it is larger than the sum of its proper divisors (1413083).

7065385 is a wasteful number, since it uses less digits than its factorization.

7065385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1413082.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 7065385 is about 2658.0791937036. The cubic root of 7065385 is about 191.8868781705.

The spelling of 7065385 in words is "seven million, sixty-five thousand, three hundred eighty-five".

Divisors: 1 5 1413077 7065385