Search a number
-
+
66575454 = 23111008719
BaseRepresentation
bin1111110111110…
…1110001011110
311122021101100120
43331331301132
5114020403304
610334535410
71435611351
oct375756136
9148241316
1066575454
1134642140
121a367566
1310a3cb7a
148bb0298
155ca10d9
hex3f7dc5e

66575454 has 16 divisors (see below), whose sum is σ = 145255680. Its totient is φ = 20174360.

The previous prime is 66575441. The next prime is 66575477. The reversal of 66575454 is 45457566.

It is a super-2 number, since 2×665754542 = 8864582150612232, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 504294 + ... + 504425.

It is an arithmetic number, because the mean of its divisors is an integer number (9078480).

Almost surely, 266575454 is an apocalyptic number.

66575454 is an abundant number, since it is smaller than the sum of its proper divisors (78680226).

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

66575454 is a wasteful number, since it uses less digits than its factorization.

66575454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008735.

The product of its digits is 504000, while the sum is 42.

The square root of 66575454 is about 8159.3782851391. The cubic root of 66575454 is about 405.2951240156.

The spelling of 66575454 in words is "sixty-six million, five hundred seventy-five thousand, four hundred fifty-four".

Divisors: 1 2 3 6 11 22 33 66 1008719 2017438 3026157 6052314 11095909 22191818 33287727 66575454