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70886081 = 759171637
BaseRepresentation
bin1000011100110…
…10001011000001
311221101101102102
410032122023001
5121121323311
611011200145
71520343650
oct416321301
9157341372
1070886081
1137016842
121b8a6055
13118bbc36
1495b3197
15635343b
hex439a2c1

70886081 has 8 divisors (see below), whose sum is σ = 82386240. Its totient is φ = 59729328.

The previous prime is 70886077. The next prime is 70886099. The reversal of 70886081 is 18068807.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70886081 - 22 = 70886077 is a prime.

It is a super-2 number, since 2×708860812 = 10049672959077122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70886051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85406 + ... + 86231.

It is an arithmetic number, because the mean of its divisors is an integer number (10298280).

Almost surely, 270886081 is an apocalyptic number.

It is an amenable number.

70886081 is a deficient number, since it is larger than the sum of its proper divisors (11500159).

70886081 is a wasteful number, since it uses less digits than its factorization.

70886081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171703.

The product of its (nonzero) digits is 21504, while the sum is 38.

The square root of 70886081 is about 8419.3872104803. The cubic root of 70886081 is about 413.8601926270.

The spelling of 70886081 in words is "seventy million, eight hundred eighty-six thousand, eighty-one".

Divisors: 1 7 59 413 171637 1201459 10126583 70886081