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6662666 = 23331333
BaseRepresentation
bin11001011010101000001010
3110112111110102
4121122220022
53201201131
6354445402
7110426453
oct31325012
913474412
106662666
11384083a
122293862
1314c380a
14c5612a
158b91cb
hex65aa0a

6662666 has 4 divisors (see below), whose sum is σ = 9994002. Its totient is φ = 3331332.

The previous prime is 6662651. The next prime is 6662671.

6662666 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6630625 + 32041 = 2575^2 + 179^2 .

It is a super-2 number, since 2×66626662 = 88782236455112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1665665 + ... + 1665668.

Almost surely, 26662666 is an apocalyptic number.

6662666 is a deficient number, since it is larger than the sum of its proper divisors (3331336).

6662666 is a wasteful number, since it uses less digits than its factorization.

6662666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3331335.

The product of its digits is 93312, while the sum is 38.

The square root of 6662666 is about 2581.2140554398. The cubic root of 6662666 is about 188.1695505282.

The spelling of 6662666 in words is "six million, six hundred sixty-two thousand, six hundred sixty-six".

Divisors: 1 2 3331333 6662666