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70069005 = 3251557089
BaseRepresentation
bin1000010110100…
…10101100001101
311212211212121100
410023102230031
5120414202010
610541453313
71510401546
oct413225415
9155755540
1070069005
1136608976
121b571239
1311694066
14943d4cd
1562412c0
hex42d2b0d

70069005 has 12 divisors (see below), whose sum is σ = 121453020. Its totient is φ = 37370112.

The previous prime is 70069003. The next prime is 70069007. The reversal of 70069005 is 50096007.

It is an interprime number because it is at equal distance from previous prime (70069003) and next prime (70069007).

It can be written as a sum of positive squares in 2 ways, for example, as 16793604 + 53275401 = 4098^2 + 7299^2 .

It is not a de Polignac number, because 70069005 - 21 = 70069003 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70069005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70069001) 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, 778500 + ... + 778589.

It is an arithmetic number, because the mean of its divisors is an integer number (10121085).

Almost surely, 270069005 is an apocalyptic number.

It is an amenable number.

70069005 is a deficient number, since it is larger than the sum of its proper divisors (51384015).

70069005 is a wasteful number, since it uses less digits than its factorization.

70069005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1557100 (or 1557097 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 70069005 is about 8370.7230870457. The cubic root of 70069005 is about 412.2639089781.

The spelling of 70069005 in words is "seventy million, sixty-nine thousand, five".

Divisors: 1 3 5 9 15 45 1557089 4671267 7785445 14013801 23356335 70069005