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1968700671 = 32731249217
BaseRepresentation
bin111010101010111…
…1111110011111111
312002012110100121200
41311111333303333
513012441410141
6523204030543
766533452050
oct16525776377
95065410550
101968700671
11920309a53
1246b392453
13254b38b52
1414966c727
15b7c7dab6
hex7557fcff

1968700671 has 12 divisors (see below), whose sum is σ = 3249918672. Its totient is φ = 1124971776.

The previous prime is 1968700639. The next prime is 1968700753. The reversal of 1968700671 is 1760078691.

It is not a de Polignac number, because 1968700671 - 25 = 1968700639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1968700621) 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, 15624546 + ... + 15624671.

It is an arithmetic number, because the mean of its divisors is an integer number (270826556).

Almost surely, 21968700671 is an apocalyptic number.

1968700671 is a deficient number, since it is larger than the sum of its proper divisors (1281218001).

1968700671 is a wasteful number, since it uses less digits than its factorization.

1968700671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31249230 (or 31249227 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The square root of 1968700671 is about 44370.0424949087. The cubic root of 1968700671 is about 1253.3140158876.

The spelling of 1968700671 in words is "one billion, nine hundred sixty-eight million, seven hundred thousand, six hundred seventy-one".

Divisors: 1 3 7 9 21 63 31249217 93747651 218744519 281242953 656233557 1968700671