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6464502164 = 221985059239
BaseRepresentation
bin1100000010101000…
…00111100110010100
3121200112002201212002
412001110013212110
5101214403032124
62545244414432
7316124235041
oct60124074624
917615081762
106464502164
11281805217a
121304b47418
137c03a2613
144547a41c8
1527c7dd0ae
hex181507994

6464502164 has 12 divisors (see below), whose sum is σ = 11908293600. Its totient is φ = 3062132568.

The previous prime is 6464502157. The next prime is 6464502193. The reversal of 6464502164 is 4612054646.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42529544 + ... + 42529695.

It is an arithmetic number, because the mean of its divisors is an integer number (992357800).

Almost surely, 26464502164 is an apocalyptic number.

It is an amenable number.

6464502164 is a deficient number, since it is larger than the sum of its proper divisors (5443791436).

6464502164 is a wasteful number, since it uses less digits than its factorization.

6464502164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85059262 (or 85059260 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

The square root of 6464502164 is about 80402.1278574143. The cubic root of 6464502164 is about 1862.8520399608.

The spelling of 6464502164 in words is "six billion, four hundred sixty-four million, five hundred two thousand, one hundred sixty-four".

Divisors: 1 2 4 19 38 76 85059239 170118478 340236956 1616125541 3232251082 6464502164