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8064068331 = 3111961320981
BaseRepresentation
bin1111000001010011…
…11110101011101011
3202210222222010010110
413200221332223223
5113003400141311
63412104545403
7403556310204
oct74051765353
922728863113
108064068331
113468a57990
121690782263
139b68b5a87
14566dc45ab
15322e538a6
hex1e0a7eaeb

8064068331 has 32 divisors (see below), whose sum is σ = 12367630080. Its totient is φ = 4622313600.

The previous prime is 8064068321. The next prime is 8064068359. The reversal of 8064068331 is 1338604608.

It is a de Polignac number, because none of the positive numbers 2k-8064068331 is a prime.

It is a super-2 number, since 2×80640683312 (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8064068331.

It is not an unprimeable number, because it can be changed into a prime (8064068321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 373861 + ... + 394841.

It is an arithmetic number, because the mean of its divisors is an integer number (386488440).

Almost surely, 28064068331 is an apocalyptic number.

8064068331 is a deficient number, since it is larger than the sum of its proper divisors (4303561749).

8064068331 is a wasteful number, since it uses less digits than its factorization.

8064068331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21627.

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 8064068331 is about 89800.1577448503. The cubic root of 8064068331 is about 2005.3248380515.

The spelling of 8064068331 in words is "eight billion, sixty-four million, sixty-eight thousand, three hundred thirty-one".

Divisors: 1 3 11 19 33 57 209 613 627 1839 6743 11647 20229 20981 34941 62943 128117 230791 384351 398639 692373 1195917 4385029 12861353 13155087 38584059 141474883 244365707 424424649 733097121 2688022777 8064068331