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68580684 = 22323751487
BaseRepresentation
bin1000001011001…
…11010101001100
311210001021000100
410011213111030
5120024040214
610445531100
71461632454
oct405472514
9153037010
1068580684
1135791757
121ab73a90
13112927b3
149172d64
15604a309
hex416754c

68580684 has 36 divisors (see below), whose sum is σ = 178045504. Its totient is φ = 22241952.

The previous prime is 68580623. The next prime is 68580689. The reversal of 68580684 is 48608586.

68580684 is a `hidden beast` number, since 6 + 8 + 580 + 68 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (68580689) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24412 + ... + 27075.

Almost surely, 268580684 is an apocalyptic number.

It is an amenable number.

68580684 is an abundant number, since it is smaller than the sum of its proper divisors (109464820).

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

68580684 is a wasteful number, since it uses less digits than its factorization.

68580684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51534 (or 51529 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The square root of 68580684 is about 8281.3455428451. The cubic root of 68580684 is about 409.3240577521.

The spelling of 68580684 in words is "sixty-eight million, five hundred eighty thousand, six hundred eighty-four".

Divisors: 1 2 3 4 6 9 12 18 36 37 74 111 148 222 333 444 666 1332 51487 102974 154461 205948 308922 463383 617844 926766 1853532 1905019 3810038 5715057 7620076 11430114 17145171 22860228 34290342 68580684