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66230461 = 1129207619
BaseRepresentation
bin1111110010100…
…1100010111101
311121121212010001
43330221202331
5113423333321
610323314301
71432643503
oct374514275
9147555101
1066230461
1134426a20
121a21b991
131094bb2b
148b20673
155c33c91
hex3f298bd

66230461 has 8 divisors (see below), whose sum is σ = 74743200. Its totient is φ = 58133040.

The previous prime is 66230441. The next prime is 66230497. The reversal of 66230461 is 16403266.

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 66230461 - 213 = 66222269 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 (66230401) 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, 103491 + ... + 104128.

It is an arithmetic number, because the mean of its divisors is an integer number (9342900).

Almost surely, 266230461 is an apocalyptic number.

It is an amenable number.

66230461 is a deficient number, since it is larger than the sum of its proper divisors (8512739).

66230461 is a wasteful number, since it uses less digits than its factorization.

66230461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207659.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 66230461 is about 8138.2099383095. The cubic root of 66230461 is about 404.5938335152.

The spelling of 66230461 in words is "sixty-six million, two hundred thirty thousand, four hundred sixty-one".

Divisors: 1 11 29 319 207619 2283809 6020951 66230461