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99666999 = 3215437177
BaseRepresentation
bin1011111000011…
…00110000110111
320221112121102100
411330030300313
5201003320444
613520113143
72320104225
oct574146067
9227477370
1099666999
1151294323
12294657b3
1317858073
14d345b15
158b3ae69
hex5f0cc37

99666999 has 12 divisors (see below), whose sum is σ = 144076816. Its totient is φ = 66392352.

The previous prime is 99666947. The next prime is 99667003. The reversal of 99666999 is 99966699.

It is not a de Polignac number, because 99666999 - 29 = 99666487 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99666499) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10299 + ... + 17475.

Almost surely, 299666999 is an apocalyptic number.

99666999 is a deficient number, since it is larger than the sum of its proper divisors (44409817).

99666999 is a wasteful number, since it uses less digits than its factorization.

99666999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8726 (or 8723 counting only the distinct ones).

The product of its digits is 12754584, while the sum is 63.

The square root of 99666999 is about 9983.3360656646. The cubic root of 99666999 is about 463.6430924996.

The spelling of 99666999 in words is "ninety-nine million, six hundred sixty-six thousand, nine hundred ninety-nine".

Divisors: 1 3 9 1543 4629 7177 13887 21531 64593 11074111 33222333 99666999