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80726993 is a prime number
BaseRepresentation
bin1001100111111…
…00101111010001
312121220100121122
410303330233101
5131131230433
612002132025
72000111444
oct463745721
9177810548
1080726993
1141628426
1223051015
1313956269
14aa1565b
157149198
hex4cfcbd1

80726993 has 2 divisors, whose sum is σ = 80726994. Its totient is φ = 80726992.

The previous prime is 80726969. The next prime is 80727001. The reversal of 80726993 is 39962708.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55606849 + 25120144 = 7457^2 + 5012^2 .

It is a cyclic number.

It is not a de Polignac number, because 80726993 - 210 = 80725969 is a prime.

It is not a weakly prime, because it can be changed into another prime (80726963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40363496 + 40363497.

It is an arithmetic number, because the mean of its divisors is an integer number (40363497).

Almost surely, 280726993 is an apocalyptic number.

It is an amenable number.

80726993 is a deficient number, since it is larger than the sum of its proper divisors (1).

80726993 is an equidigital number, since it uses as much as digits as its factorization.

80726993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 80726993 is about 8984.8201428854. The cubic root of 80726993 is about 432.1882199507.

The spelling of 80726993 in words is "eighty million, seven hundred twenty-six thousand, nine hundred ninety-three".