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66047406 = 2311007901
BaseRepresentation
bin1111101111110…
…0110110101110
311121021120000020
43323330312232
5113402004111
610315343010
71431252015
oct373746656
9147246006
1066047406
1134311437
121a151a66
13108b6709
148ab3a7c
155be9906
hex3efcdae

66047406 has 8 divisors (see below), whose sum is σ = 132094824. Its totient is φ = 22015800.

The previous prime is 66047369. The next prime is 66047417. The reversal of 66047406 is 60474066.

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

66047406 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5503945 + ... + 5503956.

It is an arithmetic number, because the mean of its divisors is an integer number (16511853).

Almost surely, 266047406 is an apocalyptic number.

66047406 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66047406 is a wasteful number, since it uses less digits than its factorization.

66047406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11007906.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 66047406 is about 8126.9555185198. The cubic root of 66047406 is about 404.2207359885.

The spelling of 66047406 in words is "sixty-six million, forty-seven thousand, four hundred six".

Divisors: 1 2 3 6 11007901 22015802 33023703 66047406