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64808797 is a prime number
BaseRepresentation
bin1111011100111…
…0011101011101
311111221121221211
43313032131131
5113042340142
610233024421
71414602634
oct367163535
9144847854
1064808797
1133645899
1219855111
1310571a01
14887051b
155a52917
hex3dce75d

64808797 has 2 divisors, whose sum is σ = 64808798. Its totient is φ = 64808796.

The previous prime is 64808789. The next prime is 64808801. The reversal of 64808797 is 79780846.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53377636 + 11431161 = 7306^2 + 3381^2 .

It is a cyclic number.

It is not a de Polignac number, because 64808797 - 23 = 64808789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64808797.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64808767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32404398 + 32404399.

It is an arithmetic number, because the mean of its divisors is an integer number (32404399).

Almost surely, 264808797 is an apocalyptic number.

It is an amenable number.

64808797 is a deficient number, since it is larger than the sum of its proper divisors (1).

64808797 is an equidigital number, since it uses as much as digits as its factorization.

64808797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 677376, while the sum is 49.

The square root of 64808797 is about 8050.3911085114. The cubic root of 64808797 is about 401.6779451579.

The spelling of 64808797 in words is "sixty-four million, eight hundred eight thousand, seven hundred ninety-seven".