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6668008148 = 221667002037
BaseRepresentation
bin1100011010111000…
…11011101011010100
3122012201000220120202
412031130123223110
5102124002230043
63021354320032
7324145063664
oct61534335324
918181026522
106668008148
112911a0a23a
121361129018
138235b6669
1447381a1a4
152905db1b8
hex18d71bad4

6668008148 has 6 divisors (see below), whose sum is σ = 11669014266. Its totient is φ = 3334004072.

The previous prime is 6668008033. The next prime is 6668008153. The reversal of 6668008148 is 8418008666.

It can be written as a sum of positive squares in only one way, i.e., 5135442244 + 1532565904 = 71662^2 + 39148^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 833501015 + ... + 833501022.

It is an arithmetic number, because the mean of its divisors is an integer number (1944835711).

Almost surely, 26668008148 is an apocalyptic number.

It is an amenable number.

6668008148 is a deficient number, since it is larger than the sum of its proper divisors (5001006118).

6668008148 is a wasteful number, since it uses less digits than its factorization.

6668008148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1667002041 (or 1667002039 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 47.

The square root of 6668008148 is about 81657.8725414764. The cubic root of 6668008148 is about 1882.1982875224.

The spelling of 6668008148 in words is "six billion, six hundred sixty-eight million, eight thousand, one hundred forty-eight".

Divisors: 1 2 4 1667002037 3334004074 6668008148