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71674007 = 431166297
BaseRepresentation
bin1000100010110…
…10100010010111
311222212102020212
410101122202113
5121322032012
611040120035
71530135056
oct421324227
9158772225
1071674007
1137504819
122000601b
1311b06772
14973a39d
15645bb22
hex445a897

71674007 has 4 divisors (see below), whose sum is σ = 71840736. Its totient is φ = 71507280.

The previous prime is 71673997. The next prime is 71674019. The reversal of 71674007 is 70047617.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70047617 = 296923593.

It is a cyclic number.

It is not a de Polignac number, because 71674007 - 220 = 70625431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71674037) 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, 82718 + ... + 83579.

It is an arithmetic number, because the mean of its divisors is an integer number (17960184).

Almost surely, 271674007 is an apocalyptic number.

71674007 is a deficient number, since it is larger than the sum of its proper divisors (166729).

71674007 is a wasteful number, since it uses less digits than its factorization.

71674007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166728.

The product of its (nonzero) digits is 8232, while the sum is 32.

The square root of 71674007 is about 8466.0502597138. The cubic root of 71674007 is about 415.3879509589.

The spelling of 71674007 in words is "seventy-one million, six hundred seventy-four thousand, seven".

Divisors: 1 431 166297 71674007