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66242833 = 436722993
BaseRepresentation
bin1111110010110…
…0100100010001
311121122111002021
43330230210101
5113424232313
610323451441
71433024536
oct374544421
9147574067
1066242833
1134435248
121a226b81
1310954657
148b24d8d
155c3778d
hex3f2c911

66242833 has 8 divisors (see below), whose sum is σ = 68798048. Its totient is φ = 63733824.

The previous prime is 66242831. The next prime is 66242849. The reversal of 66242833 is 33824266.

66242833 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66242833 - 21 = 66242831 is a prime.

It is a super-2 number, since 2×662428332 = 8776225847731778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66242831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8616 + ... + 14377.

It is an arithmetic number, because the mean of its divisors is an integer number (8599756).

Almost surely, 266242833 is an apocalyptic number.

It is an amenable number.

66242833 is a deficient number, since it is larger than the sum of its proper divisors (2555215).

66242833 is a wasteful number, since it uses less digits than its factorization.

66242833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23103.

The product of its digits is 41472, while the sum is 34.

The square root of 66242833 is about 8138.9700208319. The cubic root of 66242833 is about 404.6190249612.

The spelling of 66242833 in words is "sixty-six million, two hundred forty-two thousand, eight hundred thirty-three".

Divisors: 1 43 67 2881 22993 988699 1540531 66242833