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68051995 = 5111237309
BaseRepresentation
bin1000000111001…
…10010000011011
311202001101210021
410003212100123
5114410130440
610430331311
71454301214
oct403462033
9152041707
1068051995
1135460520
121a959b37
1311138c6b
14907640b
155e9384a
hex40e641b

68051995 has 8 divisors (see below), whose sum is σ = 89086320. Its totient is φ = 49492320.

The previous prime is 68051989. The next prime is 68052001. The reversal of 68051995 is 59915086.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (68051989) and next prime (68052001).

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

It is a de Polignac number, because none of the positive numbers 2k-68051995 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 618600 + ... + 618709.

It is an arithmetic number, because the mean of its divisors is an integer number (11135790).

Almost surely, 268051995 is an apocalyptic number.

68051995 is a deficient number, since it is larger than the sum of its proper divisors (21034325).

68051995 is a wasteful number, since it uses less digits than its factorization.

68051995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1237325.

The product of its (nonzero) digits is 97200, while the sum is 43.

The square root of 68051995 is about 8249.3633087651. The cubic root of 68051995 is about 408.2695158724.

The spelling of 68051995 in words is "sixty-eight million, fifty-one thousand, nine hundred ninety-five".

Divisors: 1 5 11 55 1237309 6186545 13610399 68051995