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68799445 = 5111396223
BaseRepresentation
bin1000001100111…
…00101111010101
311210110101002121
410012130233111
5120103040240
610454335541
71463533321
oct406345725
9153411077
1068799445
1135921050
121b05a5b1
131133b240
1491cc981
15609004a
hex419cbd5

68799445 has 16 divisors (see below), whose sum is σ = 96993792. Its totient is φ = 46186560.

The previous prime is 68799433. The next prime is 68799449. The reversal of 68799445 is 54499786.

It is a happy number.

It is not a de Polignac number, because 68799445 - 25 = 68799413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68799392 and 68799401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68799449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47397 + ... + 48826.

It is an arithmetic number, because the mean of its divisors is an integer number (6062112).

Almost surely, 268799445 is an apocalyptic number.

68799445 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

68799445 is a deficient number, since it is larger than the sum of its proper divisors (28194347).

68799445 is a wasteful number, since it uses less digits than its factorization.

68799445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96252.

The product of its digits is 2177280, while the sum is 52.

The square root of 68799445 is about 8294.5430856678. The cubic root of 68799445 is about 409.7588210753.

The spelling of 68799445 in words is "sixty-eight million, seven hundred ninety-nine thousand, four hundred forty-five".

Divisors: 1 5 11 13 55 65 143 715 96223 481115 1058453 1250899 5292265 6254495 13759889 68799445