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87060977686 = 283811764613
BaseRepresentation
bin101000100010100111…
…1010001100000010110
322022201102120220110001
41101011033101200112
52411300102241221
6103554550521514
76201311046244
oct1210517214026
9268642526401
1087060977686
1133a1671a131
1214a5866629a
138295c6aa17
1442dc849794
1523e8330391
hex14453d1816

87060977686 has 16 divisors (see below), whose sum is σ = 132183185904. Its totient is φ = 43000061344.

The previous prime is 87060977651. The next prime is 87060977719. The reversal of 87060977686 is 68677906078.

It is a happy number.

It is a super-2 number, since 2×870609776862 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1315116 + ... + 1379728.

It is an arithmetic number, because the mean of its divisors is an integer number (8261449119).

Almost surely, 287060977686 is an apocalyptic number.

87060977686 is a deficient number, since it is larger than the sum of its proper divisors (45122208218).

87060977686 is a wasteful number, since it uses less digits than its factorization.

87060977686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72815.

The product of its (nonzero) digits is 42674688, while the sum is 64.

The spelling of 87060977686 in words is "eighty-seven billion, sixty million, nine hundred seventy-seven thousand, six hundred eighty-six".

Divisors: 1 2 83 166 8117 16234 64613 129226 673711 1347422 5362879 10725758 524463721 1048927442 43530488843 87060977686