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868197047 = 438922549
BaseRepresentation
bin110011101111111…
…010001010110111
32020111122222110012
4303233322022313
53234224301142
6222052250435
730341360504
oct6357721267
92214588405
10868197047
11406090323
12202910a1b
1310ab3cb83
148343c4ab
1551348882
hex33bfa2b7

868197047 has 12 divisors (see below), whose sum is σ = 898834200. Its totient is φ = 838149312.

The previous prime is 868197023. The next prime is 868197049. The reversal of 868197047 is 740791868.

It is not a de Polignac number, because 868197047 - 222 = 864002743 is a prime.

It is a super-2 number, since 2×8681970472 = 1507532224839040418, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 868196986 and 868197004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868197049) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 339329 + ... + 341877.

It is an arithmetic number, because the mean of its divisors is an integer number (74902850).

Almost surely, 2868197047 is an apocalyptic number.

868197047 is a deficient number, since it is larger than the sum of its proper divisors (30637153).

868197047 is an equidigital number, since it uses as much as digits as its factorization.

868197047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2770 (or 2681 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 50.

The square root of 868197047 is about 29465.1836410364. The cubic root of 868197047 is about 953.9803621723.

The spelling of 868197047 in words is "eight hundred sixty-eight million, one hundred ninety-seven thousand, forty-seven".

Divisors: 1 43 89 2549 3827 7921 109607 226861 340603 9755023 20190629 868197047