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2020662061 = 11385147701
BaseRepresentation
bin111100001110000…
…1101101100101101
312012211020021020121
41320130031230231
513114242141221
6532301444541
7101034226015
oct17034155455
95184207217
102020662061
1194767a350
12484870751
1326282cc32
14152516c45
15bc5e4a41
hex7870db2d

2020662061 has 8 divisors (see below), whose sum is σ = 2204977248. Its totient is φ = 1836450000.

The previous prime is 2020662037. The next prime is 2020662071. The reversal of 2020662061 is 1602660202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2k-2020662061 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 (2020662001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18511 + ... + 66211.

It is an arithmetic number, because the mean of its divisors is an integer number (275622156).

Almost surely, 22020662061 is an apocalyptic number.

It is an amenable number.

2020662061 is a deficient number, since it is larger than the sum of its proper divisors (184315187).

2020662061 is a wasteful number, since it uses less digits than its factorization.

2020662061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51563.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 2020662061 is about 44951.7748370406. The cubic root of 2020662061 is about 1264.2449547045.

The spelling of 2020662061 in words is "two billion, twenty million, six hundred sixty-two thousand, sixty-one".

Divisors: 1 11 3851 42361 47701 524711 183696551 2020662061