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69620869 is a prime number
BaseRepresentation
bin1000010011001…
…01010010000101
311212000002212201
410021211102011
5120310331434
610524114501
71503524203
oct411452205
9155002781
1069620869
113633220a
121b395a31
13115680a6
149364073
1561a3614
hex4265485

69620869 has 2 divisors, whose sum is σ = 69620870. Its totient is φ = 69620868.

The previous prime is 69620833. The next prime is 69620879. The reversal of 69620869 is 96802696.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49702500 + 19918369 = 7050^2 + 4463^2 .

It is a cyclic number.

It is not a de Polignac number, because 69620869 - 29 = 69620357 is a prime.

It is a super-2 number, since 2×696208692 = 9694130800630322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69620879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34810434 + 34810435.

It is an arithmetic number, because the mean of its divisors is an integer number (34810435).

Almost surely, 269620869 is an apocalyptic number.

It is an amenable number.

69620869 is a deficient number, since it is larger than the sum of its proper divisors (1).

69620869 is an equidigital number, since it uses as much as digits as its factorization.

69620869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 69620869 is about 8343.9120920585. The cubic root of 69620869 is about 411.3831316648.

The spelling of 69620869 in words is "sixty-nine million, six hundred twenty thousand, eight hundred sixty-nine".