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68633477 = 1134717981
BaseRepresentation
bin1000001011101…
…00001110000101
311210010221102122
410011310032011
5120032232402
610451015325
71462242413
oct405641605
9153127378
1068633477
1135818390
121ab9a545
13112b0833
1491882b3
15605aca2
hex4174385

68633477 has 8 divisors (see below), whose sum is σ = 75092832. Its totient is φ = 62210800.

The previous prime is 68633431. The next prime is 68633497. The reversal of 68633477 is 77433686.

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 68633477 - 210 = 68632453 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 (68633497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5174 + ... + 12807.

It is an arithmetic number, because the mean of its divisors is an integer number (9386604).

Almost surely, 268633477 is an apocalyptic number.

It is an amenable number.

68633477 is a deficient number, since it is larger than the sum of its proper divisors (6459355).

68633477 is a wasteful number, since it uses less digits than its factorization.

68633477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18339.

The product of its digits is 508032, while the sum is 44.

The square root of 68633477 is about 8284.5323947704. The cubic root of 68633477 is about 409.4290625491.

The spelling of 68633477 in words is "sixty-eight million, six hundred thirty-three thousand, four hundred seventy-seven".

Divisors: 1 11 347 3817 17981 197791 6239407 68633477