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68024245 = 516978017
BaseRepresentation
bin1000000110111…
…11011110110101
311201222222201111
410003133132311
5114403233440
610425555021
71454124262
oct403373665
9151888644
1068024245
1135441693
121a945a71
1311129443
14906a269
155e8a4ea
hex40df7b5

68024245 has 8 divisors (see below), whose sum is σ = 81687384. Its totient is φ = 54380544.

The previous prime is 68024233. The next prime is 68024267. The reversal of 68024245 is 54242086.

It can be written as a sum of positive squares in 4 ways, for example, as 25331089 + 42693156 = 5033^2 + 6534^2 .

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 68024245 - 29 = 68023733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4477 + ... + 12493.

It is an arithmetic number, because the mean of its divisors is an integer number (10210923).

Almost surely, 268024245 is an apocalyptic number.

It is an amenable number.

68024245 is a deficient number, since it is larger than the sum of its proper divisors (13663139).

68024245 is a wasteful number, since it uses less digits than its factorization.

68024245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9719.

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 68024245 is about 8247.6811892798. The cubic root of 68024245 is about 408.2140140982.

The spelling of 68024245 in words is "sixty-eight million, twenty-four thousand, two hundred forty-five".

Divisors: 1 5 1697 8017 8485 40085 13604849 68024245