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68247170 = 256824717
BaseRepresentation
bin1000001000101…
…01111010000010
311202102022111222
410010111322002
5114432402140
610434435042
71456043225
oct404257202
9152368458
1068247170
1135584122
121aa32a82
13111a6a54
1490c75bc
155ed15b5
hex4115e82

68247170 has 8 divisors (see below), whose sum is σ = 122844924. Its totient is φ = 27298864.

The previous prime is 68247161. The next prime is 68247181. The reversal of 68247170 is 7174286.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 62710561 + 5536609 = 7919^2 + 2353^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 68247170.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3412349 + ... + 3412368.

Almost surely, 268247170 is an apocalyptic number.

68247170 is a deficient number, since it is larger than the sum of its proper divisors (54597754).

68247170 is a wasteful number, since it uses less digits than its factorization.

68247170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6824724.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 68247170 is about 8261.1845397618. The cubic root of 68247170 is about 408.6594527398.

The spelling of 68247170 in words is "sixty-eight million, two hundred forty-seven thousand, one hundred seventy".

Divisors: 1 2 5 10 6824717 13649434 34123585 68247170