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66080453 = 538914009
BaseRepresentation
bin1111110000010…
…0111011000101
311121100020100012
43330010323011
5113404033303
610320200005
71431450245
oct374047305
9147306305
1066080453
113433424a
121a169005
13108c877a
148ac1b25
155c045d8
hex3f04ec5

66080453 has 8 divisors (see below), whose sum is σ = 68088600. Its totient is φ = 64100608.

The previous prime is 66080447. The next prime is 66080459. The reversal of 66080453 is 35408066.

It is an interprime number because it is at equal distance from previous prime (66080447) and next prime (66080459).

It can be written as a sum of positive squares in 4 ways, for example, as 14915044 + 51165409 = 3862^2 + 7153^2 .

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 66080453 - 218 = 65818309 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 (66080459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2288 + ... + 11721.

It is an arithmetic number, because the mean of its divisors is an integer number (8511075).

Almost surely, 266080453 is an apocalyptic number.

It is an amenable number.

66080453 is a deficient number, since it is larger than the sum of its proper divisors (2008147).

66080453 is a wasteful number, since it uses less digits than its factorization.

66080453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14151.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 66080453 is about 8128.9884364538. The cubic root of 66080453 is about 404.2881423972.

The spelling of 66080453 in words is "sixty-six million, eighty thousand, four hundred fifty-three".

Divisors: 1 53 89 4717 14009 742477 1246801 66080453