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2660030061 = 313500313633
BaseRepresentation
bin1001111010001100…
…1101011001101101
320212101022112020220
42132203031121231
520421431430221
61115541401553
7122626611453
oct23643153155
96771275226
102660030061
111145576a57
12622a092b9
133351307b0
141b33ca9d3
151087dc0c6
hex9e8cd66d

2660030061 has 16 divisors (see below), whose sum is σ = 3820574016. Its totient is φ = 1636494336.

The previous prime is 2660030059. The next prime is 2660030101. The reversal of 2660030061 is 1600300662.

It is not a de Polignac number, because 2660030061 - 21 = 2660030059 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2660030041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188301 + ... + 201933.

It is an arithmetic number, because the mean of its divisors is an integer number (238785876).

Almost surely, 22660030061 is an apocalyptic number.

It is an amenable number.

2660030061 is a deficient number, since it is larger than the sum of its proper divisors (1160543955).

2660030061 is a wasteful number, since it uses less digits than its factorization.

2660030061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18652.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 2660030061 is about 51575.4792609822. The cubic root of 2660030061 is about 1385.5712017023.

The spelling of 2660030061 in words is "two billion, six hundred sixty million, thirty thousand, sixty-one".

Divisors: 1 3 13 39 5003 13633 15009 40899 65039 177229 195117 531687 68205899 204617697 886676687 2660030061