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66414207 = 322138069
BaseRepresentation
bin1111110101011…
…0011001111111
311121222012011110
43331112121333
5114000223312
610331253103
71434340266
oct375263177
9147865143
1066414207
1134541a82
121a2aa193
13109b4662
148b6b5dd
155c6d43c
hex3f5667f

66414207 has 4 divisors (see below), whose sum is σ = 88552280. Its totient is φ = 44276136.

The previous prime is 66414199. The next prime is 66414209. The reversal of 66414207 is 70241466.

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

It is not a de Polignac number, because 66414207 - 23 = 66414199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66414209) by changing a digit.

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, 11069032 + ... + 11069037.

It is an arithmetic number, because the mean of its divisors is an integer number (22138070).

Almost surely, 266414207 is an apocalyptic number.

66414207 is a deficient number, since it is larger than the sum of its proper divisors (22138073).

66414207 is a wasteful number, since it uses less digits than its factorization.

66414207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22138072.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 66414207 is about 8149.4912111125. The cubic root of 66414207 is about 404.9676486885.

The spelling of 66414207 in words is "sixty-six million, four hundred fourteen thousand, two hundred seven".

Divisors: 1 3 22138069 66414207