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20709607 is a prime number
BaseRepresentation
bin100111100000…
…0000011100111
31102222011020111
41033000003213
520300201412
62015513451
7341012602
oct117000347
942864214
1020709607
1110765486
126b28887
1343a1409
142a71339
151c412a7
hex13c00e7

20709607 has 2 divisors, whose sum is σ = 20709608. Its totient is φ = 20709606.

The previous prime is 20709593. The next prime is 20709629. The reversal of 20709607 is 70690702.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20709607 - 223 = 12320999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20707607) 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 as a sum of consecutive naturals, namely, 10354803 + 10354804.

It is an arithmetic number, because the mean of its divisors is an integer number (10354804).

Almost surely, 220709607 is an apocalyptic number.

20709607 is a deficient number, since it is larger than the sum of its proper divisors (1).

20709607 is an equidigital number, since it uses as much as digits as its factorization.

20709607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 20709607 is about 4550.7809219957. The cubic root of 20709607 is about 274.6148083736.

It can be divided in two parts, 20709 and 607, that added together give a square (21316 = 1462).

The spelling of 20709607 in words is "twenty million, seven hundred nine thousand, six hundred seven".