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64971107 = 298812543
BaseRepresentation
bin1111011111011…
…0000101100011
311112020212121022
43313312011203
5113113033412
610240320055
71416150065
oct367660543
9145225538
1064971107
1133746833
121991302b
13105ca856
1488b3735
155a85a72
hex3df6163

64971107 has 8 divisors (see below), whose sum is σ = 67314240. Its totient is φ = 62634880.

The previous prime is 64971103. The next prime is 64971121. The reversal of 64971107 is 70117946.

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 64971107 - 22 = 64971103 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64971103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24278 + ... + 26820.

It is an arithmetic number, because the mean of its divisors is an integer number (8414280).

Almost surely, 264971107 is an apocalyptic number.

64971107 is a deficient number, since it is larger than the sum of its proper divisors (2343133).

64971107 is a wasteful number, since it uses less digits than its factorization.

64971107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3453.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 64971107 is about 8060.4656813363. The cubic root of 64971107 is about 402.0129922453.

The spelling of 64971107 in words is "sixty-four million, nine hundred seventy-one thousand, one hundred seven".

Divisors: 1 29 881 2543 25549 73747 2240383 64971107