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64796823 = 32713611297
BaseRepresentation
bin1111011100101…
…1100010010111
311111221000112100
43313023202113
5113041444243
610232453143
71414523010
oct367134227
9144830470
1064796823
11336378a3
121984a1b3
1310569420
14886a007
155a4e0d3
hex3dcb897

64796823 has 48 divisors (see below), whose sum is σ = 117173056. Its totient is φ = 33592320.

The previous prime is 64796807. The next prime is 64796863. The reversal of 64796823 is 32869746.

It is not a de Polignac number, because 64796823 - 24 = 64796807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64796803) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49311 + ... + 50607.

Almost surely, 264796823 is an apocalyptic number.

64796823 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

64796823 is a deficient number, since it is larger than the sum of its proper divisors (52376233).

64796823 is a wasteful number, since it uses less digits than its factorization.

64796823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384 (or 1381 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 64796823 is about 8049.6473835815. The cubic root of 64796823 is about 401.6532057800.

The spelling of 64796823 in words is "sixty-four million, seven hundred ninety-six thousand, eight hundred twenty-three".

Divisors: 1 3 7 9 13 21 39 61 63 91 117 183 273 427 549 793 819 1281 1297 2379 3843 3891 5551 7137 9079 11673 16653 16861 27237 49959 50583 79117 81711 118027 151749 237351 354081 553819 712053 1028521 1062243 1661457 3085563 4984371 7199647 9256689 21598941 64796823