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68512037 = 1110161667
BaseRepresentation
bin1000001010101…
…10100100100101
311202220202211212
410011112210211
5120014341122
610444241205
71461225356
oct405264445
9152822755
1068512037
1135745120
121ab40205
131126a489
149155d2d
156034ce2
hex4156925

68512037 has 8 divisors (see below), whose sum is σ = 75481632. Its totient is φ = 61666000.

The previous prime is 68512001. The next prime is 68512061. The reversal of 68512037 is 73021586.

It is a happy number.

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

It is not a de Polignac number, because 68512037 - 214 = 68495653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68511994 and 68512012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68512337) by changing a digit.

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, 29723 + ... + 31944.

It is an arithmetic number, because the mean of its divisors is an integer number (9435204).

Almost surely, 268512037 is an apocalyptic number.

It is an amenable number.

68512037 is a deficient number, since it is larger than the sum of its proper divisors (6969595).

68512037 is a wasteful number, since it uses less digits than its factorization.

68512037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61779.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 68512037 is about 8277.1998284444. The cubic root of 68512037 is about 409.1874388700.

It can be divided in two parts, 6851 and 2037, that added together give a palindrome (8888).

The spelling of 68512037 in words is "sixty-eight million, five hundred twelve thousand, thirty-seven".

Divisors: 1 11 101 1111 61667 678337 6228367 68512037