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671936007 = 31923512537
BaseRepresentation
bin101000000011001…
…110111000000111
31201211100212220210
4220003032320013
52334003423012
6150401530503
722436235051
oct5003167007
91654325823
10671936007
11315321516
12169043a33
13a9294692
14653508d1
153decc23c
hex280cee07

671936007 has 16 divisors (see below), whose sum is σ = 984072960. Its totient is φ = 405928512.

The previous prime is 671935993. The next prime is 671936029. The reversal of 671936007 is 700639176.

It is not a de Polignac number, because 671936007 - 24 = 671935991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671936047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 254958 + ... + 257579.

It is an arithmetic number, because the mean of its divisors is an integer number (61504560).

Almost surely, 2671936007 is an apocalyptic number.

671936007 is a deficient number, since it is larger than the sum of its proper divisors (312136953).

671936007 is a wasteful number, since it uses less digits than its factorization.

671936007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512582.

The product of its (nonzero) digits is 47628, while the sum is 39.

The square root of 671936007 is about 25921.7284724611. The cubic root of 671936007 is about 875.8760236656.

The spelling of 671936007 in words is "six hundred seventy-one million, nine hundred thirty-six thousand, seven".

Divisors: 1 3 19 23 57 69 437 1311 512537 1537611 9738203 11788351 29214609 35365053 223978669 671936007