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64064371 = 7191313677
BaseRepresentation
bin1111010001100…
…0101101110011
311110112210210111
43310120231303
5112400024441
610205042151
71405352410
oct364305563
9143483714
1064064371
1133187568
1219556357
1310370c17
148719107
155957081
hex3d18b73

64064371 has 16 divisors (see below), whose sum is σ = 77679360. Its totient is φ = 51611040.

The previous prime is 64064369. The next prime is 64064387. The reversal of 64064371 is 17346046.

It is a cyclic number.

It is not a de Polignac number, because 64064371 - 21 = 64064369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64064311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15585 + ... + 19261.

It is an arithmetic number, because the mean of its divisors is an integer number (4854960).

Almost surely, 264064371 is an apocalyptic number.

64064371 is a deficient number, since it is larger than the sum of its proper divisors (13614989).

64064371 is a wasteful number, since it uses less digits than its factorization.

64064371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3834.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 64064371 is about 8004.0221763811. The cubic root of 64064371 is about 400.1340613139.

The spelling of 64064371 in words is "sixty-four million, sixty-four thousand, three hundred seventy-one".

Divisors: 1 7 19 131 133 917 2489 3677 17423 25739 69863 481687 489041 3371809 9152053 64064371