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68498071 = 232978177
BaseRepresentation
bin1000001010100…
…11001010010111
311202220001200121
410011103022113
5120013414241
610444052411
71461136555
oct405231227
9152801617
1068498071
1135735684
121ab34107
1311264005
149150bd5
156030ad1
hex4153297

68498071 has 4 divisors (see below), whose sum is σ = 71476272. Its totient is φ = 65519872.

The previous prime is 68498069. The next prime is 68498077. The reversal of 68498071 is 17089486.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68498071 - 21 = 68498069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68498077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1489066 + ... + 1489111.

It is an arithmetic number, because the mean of its divisors is an integer number (17869068).

Almost surely, 268498071 is an apocalyptic number.

68498071 is a deficient number, since it is larger than the sum of its proper divisors (2978201).

68498071 is a wasteful number, since it uses less digits than its factorization.

68498071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2978200.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 68498071 is about 8276.3561426512. The cubic root of 68498071 is about 409.1596330499.

The spelling of 68498071 in words is "sixty-eight million, four hundred ninety-eight thousand, seventy-one".

Divisors: 1 23 2978177 68498071