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69717349 = 138960257
BaseRepresentation
bin1000010011111…
…00110101100101
311212012000020001
410021330311211
5120321423344
610530141301
71504405402
oct411746545
9155160201
1069717349
1136398749
121b421831
131159cc90
14938b2a9
1561c1ed4
hex427cd65

69717349 has 8 divisors (see below), whose sum is σ = 75925080. Its totient is φ = 63630336.

The previous prime is 69717341. The next prime is 69717353. The reversal of 69717349 is 94371796.

It can be written as a sum of positive squares in 4 ways, for example, as 2592100 + 67125249 = 1610^2 + 8193^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 69717349 - 23 = 69717341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 69717299 and 69717308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69717341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28972 + ... + 31285.

It is an arithmetic number, because the mean of its divisors is an integer number (9490635).

Almost surely, 269717349 is an apocalyptic number.

It is an amenable number.

69717349 is a deficient number, since it is larger than the sum of its proper divisors (6207731).

69717349 is a wasteful number, since it uses less digits than its factorization.

69717349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60359.

The product of its digits is 285768, while the sum is 46.

The square root of 69717349 is about 8349.6915511892. The cubic root of 69717349 is about 411.5730743505.

The spelling of 69717349 in words is "sixty-nine million, seven hundred seventeen thousand, three hundred forty-nine".

Divisors: 1 13 89 1157 60257 783341 5362873 69717349