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670080020 = 225271123631
BaseRepresentation
bin100111111100001…
…001110000010100
31201200212120222112
4213330021300110
52333020030040
6150254050152
722414405031
oct4774116024
91650776875
10670080020
11314274045
121684a9958
13a8a9496c
1464dca388
153dc62365
hex27f09c14

670080020 has 24 divisors (see below), whose sum is σ = 1412371968. Its totient is φ = 267040800.

The previous prime is 670080017. The next prime is 670080029. The reversal of 670080020 is 20080076.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670080029) 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, 56396 + ... + 67235.

It is an arithmetic number, because the mean of its divisors is an integer number (58848832).

Almost surely, 2670080020 is an apocalyptic number.

It is an amenable number.

670080020 is an abundant number, since it is smaller than the sum of its proper divisors (742291948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

670080020 is a wasteful number, since it uses less digits than its factorization.

670080020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123911 (or 123909 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 670080020 is about 25885.9038860921. The cubic root of 670080020 is about 875.0688468277.

The spelling of 670080020 in words is "six hundred seventy million, eighty thousand, twenty".

Divisors: 1 2 4 5 10 20 271 542 1084 1355 2710 5420 123631 247262 494524 618155 1236310 2472620 33504001 67008002 134016004 167520005 335040010 670080020