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68152715 = 519717397
BaseRepresentation
bin1000000111111…
…10110110001011
311202020111221122
410003332312023
5114421341330
610432425455
71455200651
oct403766613
9152214848
1068152715
113551a164
121a9a828b
1311172a67
1490a0dd1
155eb35e5
hex40fed8b

68152715 has 8 divisors (see below), whose sum is σ = 86087760. Its totient is φ = 51652512.

The previous prime is 68152709. The next prime is 68152717. The reversal of 68152715 is 51725186.

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 68152715 - 24 = 68152699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68152717) 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, 358604 + ... + 358793.

It is an arithmetic number, because the mean of its divisors is an integer number (10760970).

Almost surely, 268152715 is an apocalyptic number.

68152715 is a deficient number, since it is larger than the sum of its proper divisors (17935045).

68152715 is a wasteful number, since it uses less digits than its factorization.

68152715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717421.

The product of its digits is 16800, while the sum is 35.

The square root of 68152715 is about 8255.4657651764. The cubic root of 68152715 is about 408.4708356396.

The spelling of 68152715 in words is "sixty-eight million, one hundred fifty-two thousand, seven hundred fifteen".

Divisors: 1 5 19 95 717397 3586985 13630543 68152715