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997807 is a prime number
BaseRepresentation
bin11110011100110101111
31212200201211
43303212233
5223412212
633215251
711324026
oct3634657
91780654
10997807
11621738
12401527
1328c225
141bd8bd
1514a9a7
hexf39af

997807 has 2 divisors, whose sum is σ = 997808. Its totient is φ = 997806.

The previous prime is 997793. The next prime is 997811. The reversal of 997807 is 708799.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 997807 - 219 = 473519 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 997807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498903 + 498904.

It is an arithmetic number, because the mean of its divisors is an integer number (498904).

2997807 is an apocalyptic number.

997807 is a deficient number, since it is larger than the sum of its proper divisors (1).

997807 is an equidigital number, since it uses as much as digits as its factorization.

997807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 40.

The square root of 997807 is about 998.9028981838. The cubic root of 997807 is about 99.9268464987.

The spelling of 997807 in words is "nine hundred ninety-seven thousand, eight hundred seven".